Girls are like cats, they both hate and love attention at the same time. You need to figure out when to give them attention and when to ignore them. For example, be chivalrous when they least expect you to be without any hint or announcement, then ignore hard, pretend like nothing ever happened. Most simple creatures, including 99% of humans of both sexes, fall for that simple trick every time. Problem with this, if the chick is exceptionally intelligent she will see right through this maneuver and probably be mad you for trying to play her using cheap, low effort tactics. Some smart chicks may appreciate the effort tho. At the end of the day, all beautiful creatures have one enemy they can never win against and that enemy is time. Be around when their pretty little heads start to panic and you will get what you want. But there are others like you trying the same thing, never forget that.