Now what...

You walk into a job fair. Go to a stall of the company you are interested in. You have already signed up for an interview with them. Your sole purpose of going to job fair is collecting the free goodies they give away. You introduce yourself to the person you are going to interview next day. They acknowledge the fact. And then silence. Now what? You still want those goodies but you can't blurt that and you have nothing else to talk about. What do you do next?