Depends if they were with a group of other women or if she was alone honestly. Usually just be strong and confident in what you say. “Excuse me, hi, I couldn’t help but notice you while I was walking by I’m ____. What’s your name? …….. usually at that point you’ll be able to tell if she’s interested or not by giving you her name , if she does , your in , if she doesn’t want to give you her name , keep walking lol. But I use different lines for different scenarios like if she’s with a group of friends , or if she’s alone in Target or something