Most Helpful Girl
Just go for it you might get one.
Most Helpful Guy
Just walking up to a girl and saying "Do you want to go out with me?" Is probably not going to work. You're going to have to sit down and talk to her a little bit. Doesn't have to be long. Maybe five minutes at most. Just a small mini conversation and if she likes you enough then you can ask her for her number and then ask her out.