Beautiful shy bank teller

In not sure who how to approach this teller at my bank in order to see if she is single. We alsways carry on small talk, yea even with me nervous. The other day she was at a different window and she had the wrong nametag up and with intentions of flirting i ask if her name was "a" or "b", she smilled real big and explained to me why it was that way. It seems to me that whenever she sees me she instantly perks up and opens that smile of hers. I'm wondering if she is that way with everyone or just me, cuz if I knew that it would be easier for me to ask the question. Any advice would help.

Well just ask her the question anyway. Approach sweetly of course, woman likes respect and if she is shy and u make an inapropriate move, she might feel offended.
good luck:)