Ways to be sociable:
1. Act as if you've known the person forever. Crack jokes, make fun of them, talk crap.
2. Be well-versed in all topics, so that you have something substantial to say no matter what topics come up.
3. Be ultra-nice, find things to talk about, make small talk out of nothing
4. Let the other person talk and be a great listener
5. Be a riddlebag/ jokebag and throw out riddles and jokes continuously to entertain everyone =)
I find it useful to educate oneself on the weather. It makes good conversation for 1 minute. Great elevator topic.