[fusiongyro]

I bet you could cancel a fake reservation one second before making a reservation on behalf of someone else. The effect would be the same as reselling.

Honestly though, I don't understand why this needs to be available over the web in the first place. If your restaurant is that posh, I'm sure you're not going to lose business by making people call in their reservations. You'll still need to have someone answering the phone anyway, so it's not like you're saving money by cutting an employee. Whatever meaningful benefit having an online reservation system might have provided is clearly lost in the absurdity of this situation.