First of all, do not let magic define you. You also want them to see you as a human being too. If you do that, you are going to get a big award meaning that once they look back, "Oh yeah, this magician happens to be a friend of mine". Anyway, to answer your question, I agreed with the other posts above me, do some card flourishes and try to walk around in the cafeteria during lunch and say, "Hi, my name is (insert name) and I was wondering if I can show you something". Works all the time.