>>5795452You be polite, smile and try to get to know her. Dating is a buying game, not selling; you're supposed to judge a potential partner and figure out if they'd be a good fit, not trying to come up with reasons as to why someone should go out with you as if to convince them.
If you like what you see and you like what you hear, you decide for yourself if you want to take it further and you say "We should get something to eat sometime" and give her your number.