What I would recommend you do is find a newspaper or other news source online that is:

A) In your target language; and

B) From the area of the world (preferably the city) that the person you’re going to talk to is. If this isn’t possible, or you’d like to use something that you can talk to anyone about, go with international news that most people would be familiar with regardless of where they’re at.

Now, pick a news story out of there and read it, looking up any words you don’t know, and (this is very important) making a list of questions you’d like to ask and things you’d like to talk about with the person you’re going to practice with.

This way you’ll learn a TON of new vocabulary every time you do this (and it’ll be real-world practical stuff, not crap from a textbook or wordlist) AND you’ll be learning a TON of stuff about the culture every time you do it, as well. Doing this twice or three times a week is far, FAR better than getting on for 10 or 15 minutes a day and doing unfocused chit-chat.

Oh, also, another added bonus is that you’re simultaneously working on your reading skills as well, since you have to read news stories in your target language.

I hope that helps, don’t hesitate to hit me back with any questions.

Cheers,
Andrew