[quote="SashaBelov"]Did you do something to impress her or build attraction? Did it look like she was interested in you? Girls at clothing stores usually have to talk about clothes with customers, it's part of their job so not really a sign of her being into you.. but that's something you can work on.
Once you have built that attraction, just find a good pause in the conversation and say "hey listen I need to run, meeting some friends, but you seem cool and I'd like to take you out sometime.. can I get your number?".
Don't be nervous about asking for their number, if they're still talking with you for a little bit they're most likely interested as well.. so just grow a pair and ask for it!

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Thanks for the advice! I'd say there was attraction there the clothes talk was sort of an opener. After that we talked about everything from what courses she's taking at UNI my courses to where she's from to what kind of car she drives on and on we talked for about 1/2 hour 45min. Customers would come in she'd get the other girl to take care of them and we'd keep talking. I'd take that to be an ioi but my problem isn't having the balls to ask for her # its asking in a way that seems classy I guess you'd say so I don't ruin the groundwork I've put down. But I like close you mentioned I'll give that a try. thanks for the advice