Ask HN: Help finding a caterer for an event

So I'm getting married here pretty soon and am having a hell of time finding a caterer. I started thinking about the whole process and how to make this easier for others. There might be a service that does what I am looking for but my Google-fu has failed me.

Basically my idea is to have a site up where the client fills out a form specifying cuisine, number of guests, a date, and a budget. The data would be sent out to matching caterer's in the form of a lead.

This would turn into a bidding game between caterers for your business.

Does this service exist or do I need to start hacking something together?