This is another story of mine:
Last month, I took an exam for a government position. I only knew about three people who were taking the exam with me, they were friends but we weren’t exactly close in the past. I saw this girl and I guess she saw me too, because our eyes met but being the shy guy that I am, I immediately looked away. I promised myself that if given the opportunity, I will talk to her and get her number.
Wear the pants. Tell her what time and where to meet you, don't be timid or she'll get the wrong idea.
Remember though, every girl is different so don't take this as a rule of thumb.