Eshop Date availability Booking option

Hy, im considering to buy yours component to apply in a client. but i need the particular situation, my client sell trips, and he needs to add availabilitys in the site, they need the client choose the day off trip that they add in backoffice, and show in a calendar in front office, some days have a diferente cost from others.
It must be a required field, is this possible??

Thanks