Validation and confirmation pages redundent

This is really what I also would like to know.
In my case, I only have one service and one employee, and the service is free of charge (I mean the clients pay a monthly fee and the fee is not depending upon the number of reservations). My webpage has two layers, and the service booking menu is only available for the registered users, so I don't need to complicate the booking process at all.
Waiting for Your reply,
Thank You!