So many girls what to do?

Ok so I work at a grocery store and I'm a bagger, I see good looking girls every day I work, a lot of them show interest in me but I just don't know how to go about talking to them, is it possible to talk to them and get their number while I'm bagging their groceries? I have supervisors but they're cool they wouldn't mind it if I was talking to a girl, I'm pretty manly and they let me do my own thing as long as I work good, just wondering if anyone has been in the same situation or if anyone has actually done it themselves, just some tips on how to go about doing it.