I'm a college student with no car and I discovered that I'm having a hard time with conversations. I feel like I forgot how to be playful. Now I'm stuck with these two awkward situations. Waiting for class to start in the hall, which I'm forced to avoid now because I feel like a ass if I don't talk to the girls I know. Then there's the 20min break between classes, where I usually leave to get something to eat to avoid any awkward pressure.

I'm thinking about taking things further with girls, but how do I do that? What do I do if I already know them? How do I approach them beyond saying hi in the hall? The semester is almost over and I want to make these connections last longer some how.

Edit 1: Sorry about the format, didn't think it would be so complicated.