Booking Form Help Needed

We are an online yoga studio and our customers book many classes. Every time a class is booked, they need to fill out a booking form where they need to provide certain details. This is an annoying process, as if one person books 10 class in a span of a month, he/she has to fill out the same form every time during the booking process. Is there a feature as such, where once filled they do not require to fill out the form again and again? Please look into this matter and help us out.