can i call a restaurant to speak to a waiter?

[Sarrah]

So i was just at golden corral and i met this guy at the cashier stand and we chatted a bit. He asked for me to add him on fb but i couldn't find him. basically my question is if i was to call the restaurant would they allow me to speak to him if i asked? Or would that put his job in jeopardy?
If so is there something i could say, like "i believe i accidentally left something with a waiter by the name of______ _____, i need to speak to him to make sure beforehand so i can come pick it up later" or something a bit more believable so i can talk to him again and get his number. That's a bit much, i know! But i don't want to get someone fired!