What I found after many years, is that women (people in general, really) are not attracted to people who try too hard to get attention from them. Going through great lengths tends to result in being labeled as desperate or creepy. Try just to be friendly and talk "with" them and not "to" them, almost as if you are one of them. By doing that often enough, it will feel less awkward. Practice makes perfect. And then one day you feel a click with someone. Just my few cents.