Hi
There's this gym I go to frequently and there's this cute girl who works at the times that I frequent. I say hi to her whenever I see her and try to strike a small conversation. this only ranges from 30sec to a minute at a time...such as for instance this GYM closes at 10pm so around 9 when I came to the gym I mentioned jokingly that she's a free bird in one hour which she responded with a laugh.
The thing is that there are other guys who do, I am sure, talk with her and well yes some are a lot bigger than me

(though I know that's not everything).
Also noticed recently she's wearing a ring on her middle finger. I don't know if she's single or not...I've been tempted to ask one of the other guys who work there
What's the best way for me to get this girls number and ask her out without sounding like I am hitting on her and be different from everyone else?
Thanks!