Wix Booking // Ask for a new functionality

Hi
I would like to implement a functionality that is not available for the moment with Wix Booking.
When a customer (member) reserve a schedule, i would like to propose a ‘check box’ that said ‘Hey, would like to be alert if there is a schedule free BEFORE your actual reservation ?’.
Will be very interresting to manage late cancellation and authorise customer to have an earlier rendez-vous
Thanks for your comments

You can edit the booking form Wix Bookings: Creating and Setting up Your Booking Forms | Help Center | Wix.com