Single COP, wanting to ask out my watiress at a restaurant. How to nkow if she is singe?

I go to luch at the Ale House in Ocala every shirt I work and I would love to ask out the waitress, but she told me somehting that she may be quiting and going back to Orlando. I need advise on what to do, contact her, seeing if she is leaving or even into me?? Hepl