I go to Wells Fargo and have seen this female teller there. First time I went to the bank, I went to her and we had a mutually fun conversation while she helped me do my banking. Second time, I went to get a safe and she was there, again it was a fun conversation. I've been to the bank a few more times but didn't interact with her. Today for instance I was at the bank and tried to get her attention but she wasn't paying any attention. Then when I was talking with another teller, she touched my shoulder and said hi. She was getting my attention, but then again, I wouldn't bother to touch someone and say hi unless I liked them. Should I ask her out? How can I do it at her work? Never asked someone out at work before, and don't want to embarrass her with her coworkers there.