<human>: Condense the text into a few key points

I met this girl in class last semester and only spoke to her a few times. Whenever I approached her after class she seemed happy to talk with me and I couldn't tell if she was just being nice or giving me signs of interest. The semester ended and I didn't ask her out because I didn't think she was feeling me. 

Just the other day I found out she has a class before me in the same room. As I was walking in, she was walking out and gave me a look that was obviously meant to get my attention, followed by a half smile. I then knew she was into me and totally regretted not asking her out earlier. 

Now my class ends in a week so I won't see her in passing between classes anymore. I've got 2 brief passes between to get her number and ask her out. How should I go about this? I don't even know her name...
<bot>: I need to ask out a girl I don't know too well in the next week when I don't see her often, how should I?