Prevent certain users from making reservations

Hi
I´m missing a feature in servicebooking and that is that I want to prevent certain users from making a reservation.
This restriction could be for days, weeks months or forever.
The reason for this is that if a person makes a reservation and not show up I want to prevent this user from making other reservations.

I´m not sure if this already is possible but if not this might be a good request for improvements.

Hi Stephen,
Currently, OS Services Booking doesn't have this feature, but we will consider to think about it in future.
Thanks
Dam

Hi
Sounds great.
I really hope that you will do this.

OK Stephen