It doesn't seem like you're too unsuccessful; after all, you still have a job.
If I were actually with you, I could offer better suggestions.
I would just try to find out what the person is interested in personally, and business-wise. I would make sure I acknowledge anything that the person says, and remember what the person says. A great thing to talk about, like you said, is family. Also: you could ask the person where he/she is from. Imagine if you were there/grew up there?