diff --git a/application/language/arabic/translations_lang.php b/application/language/arabic/translations_lang.php
index 97d19072..2de84a0b 100755
--- a/application/language/arabic/translations_lang.php
+++ b/application/language/arabic/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/bulgarian/translations_lang.php b/application/language/bulgarian/translations_lang.php
index 15a1a674..44c483e8 100755
--- a/application/language/bulgarian/translations_lang.php
+++ b/application/language/bulgarian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/catalan/translations_lang.php b/application/language/catalan/translations_lang.php
index 04c38969..3a64e7cf 100644
--- a/application/language/catalan/translations_lang.php
+++ b/application/language/catalan/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/chinese/translations_lang.php b/application/language/chinese/translations_lang.php
index ff905fff..d5df678b 100755
--- a/application/language/chinese/translations_lang.php
+++ b/application/language/chinese/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/croatian/translations_lang.php b/application/language/croatian/translations_lang.php
index ef08834e..be09bb56 100644
--- a/application/language/croatian/translations_lang.php
+++ b/application/language/croatian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/czech/translations_lang.php b/application/language/czech/translations_lang.php
index b42359c8..324f7fa8 100644
--- a/application/language/czech/translations_lang.php
+++ b/application/language/czech/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/danish/translations_lang.php b/application/language/danish/translations_lang.php
index db224b6c..1b6587f6 100755
--- a/application/language/danish/translations_lang.php
+++ b/application/language/danish/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/dutch/translations_lang.php b/application/language/dutch/translations_lang.php
index cf26f609..d935c65d 100755
--- a/application/language/dutch/translations_lang.php
+++ b/application/language/dutch/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/english/translations_lang.php b/application/language/english/translations_lang.php
index c456ed8a..c352fd61 100755
--- a/application/language/english/translations_lang.php
+++ b/application/language/english/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/estonian/translations_lang.php b/application/language/estonian/translations_lang.php
index a9a5edec..4d6f049d 100644
--- a/application/language/estonian/translations_lang.php
+++ b/application/language/estonian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/finnish/translations_lang.php b/application/language/finnish/translations_lang.php
index 57cb372d..19cc84b7 100755
--- a/application/language/finnish/translations_lang.php
+++ b/application/language/finnish/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/french/translations_lang.php b/application/language/french/translations_lang.php
index 1ff5fd1b..84240679 100755
--- a/application/language/french/translations_lang.php
+++ b/application/language/french/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/german/translations_lang.php b/application/language/german/translations_lang.php
index 98c9ab2b..6d03f352 100755
--- a/application/language/german/translations_lang.php
+++ b/application/language/german/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Importieren';
 $lang['ldap_dn'] = 'LDAP-DN';
 $lang['role'] = 'Rolle';
 $lang['at_least_one_field_required'] = 'Mindestens ein Feld muss auf der Buchungsseite als erforderlich gekennzeichnet sein.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/greek/translations_lang.php b/application/language/greek/translations_lang.php
index 77e99553..b7bc9499 100755
--- a/application/language/greek/translations_lang.php
+++ b/application/language/greek/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Εισαγωγή';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Ρόλος';
 $lang['at_least_one_field_required'] = 'Τουλάχιστον ένα πεδίο πρέπει να έχει οριστεί ως υποχρεωτικό στη σελίδα κράτησης.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/hebrew/translations_lang.php b/application/language/hebrew/translations_lang.php
index a71b5a9e..ebe4e26c 100644
--- a/application/language/hebrew/translations_lang.php
+++ b/application/language/hebrew/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/hindi/translations_lang.php b/application/language/hindi/translations_lang.php
index b108553b..dbde9216 100755
--- a/application/language/hindi/translations_lang.php
+++ b/application/language/hindi/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/hungarian/translations_lang.php b/application/language/hungarian/translations_lang.php
index 4d11560e..49083653 100755
--- a/application/language/hungarian/translations_lang.php
+++ b/application/language/hungarian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/italian/translations_lang.php b/application/language/italian/translations_lang.php
index 08be6d6f..32fe423d 100755
--- a/application/language/italian/translations_lang.php
+++ b/application/language/italian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/japanese/translations_lang.php b/application/language/japanese/translations_lang.php
index 2a246d53..dc334dfa 100755
--- a/application/language/japanese/translations_lang.php
+++ b/application/language/japanese/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/luxembourgish/translations_lang.php b/application/language/luxembourgish/translations_lang.php
index e06fee8e..e7753ef4 100755
--- a/application/language/luxembourgish/translations_lang.php
+++ b/application/language/luxembourgish/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/marathi/translations_lang.php b/application/language/marathi/translations_lang.php
index ae25b2ad..dccef02b 100644
--- a/application/language/marathi/translations_lang.php
+++ b/application/language/marathi/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/persian/translations_lang.php b/application/language/persian/translations_lang.php
index df629f68..1479b765 100644
--- a/application/language/persian/translations_lang.php
+++ b/application/language/persian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/polish/translations_lang.php b/application/language/polish/translations_lang.php
index 10411021..bee4d843 100755
--- a/application/language/polish/translations_lang.php
+++ b/application/language/polish/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/portuguese-br/translations_lang.php b/application/language/portuguese-br/translations_lang.php
index 8c55aa65..0ba262b6 100755
--- a/application/language/portuguese-br/translations_lang.php
+++ b/application/language/portuguese-br/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/portuguese/translations_lang.php b/application/language/portuguese/translations_lang.php
index 091326f3..6479e3dd 100755
--- a/application/language/portuguese/translations_lang.php
+++ b/application/language/portuguese/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/romanian/translations_lang.php b/application/language/romanian/translations_lang.php
index 09567b3b..01c08522 100755
--- a/application/language/romanian/translations_lang.php
+++ b/application/language/romanian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/russian/translations_lang.php b/application/language/russian/translations_lang.php
index d0780b80..dc40c9bd 100644
--- a/application/language/russian/translations_lang.php
+++ b/application/language/russian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/serbian/translations_lang.php b/application/language/serbian/translations_lang.php
index 3798f9b6..9464daa1 100644
--- a/application/language/serbian/translations_lang.php
+++ b/application/language/serbian/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/slovak/translations_lang.php b/application/language/slovak/translations_lang.php
index 709a1360..c6feb1ca 100755
--- a/application/language/slovak/translations_lang.php
+++ b/application/language/slovak/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/spanish/translations_lang.php b/application/language/spanish/translations_lang.php
index 10776a81..45436158 100755
--- a/application/language/spanish/translations_lang.php
+++ b/application/language/spanish/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/swedish/translations_lang.php b/application/language/swedish/translations_lang.php
index e63348d8..cc9fffd9 100644
--- a/application/language/swedish/translations_lang.php
+++ b/application/language/swedish/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/thai/translations_lang.php b/application/language/thai/translations_lang.php
index 5baa1e81..53740ecd 100644
--- a/application/language/thai/translations_lang.php
+++ b/application/language/thai/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End
diff --git a/application/language/turkish/translations_lang.php b/application/language/turkish/translations_lang.php
index 59c2890e..fe19cb5e 100755
--- a/application/language/turkish/translations_lang.php
+++ b/application/language/turkish/translations_lang.php
@@ -478,4 +478,5 @@ $lang['import'] = 'Import';
 $lang['ldap_dn'] = 'LDAP DN';
 $lang['role'] = 'Role';
 $lang['at_least_one_field_required'] = 'At least one field must be set as required in the booking page.';
+$lang['customer_is_already_booked'] = 'This customer already has an appointment during the requested reservation period.';
 // End