Bookings for WooCommerce has a number of filters available for developers to extend the plugin:
bfwc_booking_not_permitted Update the error message when a user makes a booking that isn’t permitted
bfwc_filter_scheduled_deletion_duration Time in minutes before an unpaid booking is deleted
bfwc_filter_added_to_cart_message Message displayed to user when they add a booking to their cart
bfwc_filter_validation_fail_parameters Message displayed when a booking is missing details
bfwc_filter_validation_fail_booking_exists Message when a user tries to add a booking with a blocked date
bfwc_filter_validation_fail_booking_exists Message when booking parameters are not valid
bfwc_filter_check_in_placeholder Filter the ‘Check in’ label in the calendar
bfwc_filter_check_out_placeholder Filter the ‘Check out’ label in the calendar
bfwc_filter_unit_labels Change the day, night, week labels
bfwc_add_to_cart_text Change the ‘Book Now’ text on the add to cart button