Chile Chef - Many ladies will when comfortable with you, flirt. Flirting does not imply something exists our than the comfort level to be friends. I can't tell you the number of nice ladies I know that flirt outrageously without further intent than to have fun.
Now if you want indications that they are interested in you, they will find reasons to be near you when it doesn't quite add up to what you expected. For example, the lady that last flirted with me *and* wanted to pursue something further, flirted outrageously with me over the course of an hour or two, and since we were at a wedding reception, stepped past that by saying she felt like dancing, not when the active fun music was playing, but when the slow music came on. Of course, she could have just have felt awkward about her dancing skills, but I think not ;-). That was about the time I made sure she knew I was married, and then asked *her* to dance the next time some fun music came on.
If you want to test the person flirting, ask her if she'd like to go out for coffee "some time"? That way you are not applying any pressure, and if she had no interest in you past the flirting, she'd make an excuse to not accept your invitation politely. If she accepts, and it was a successful meet-up, than towards the end of that get together, ask her it's she'd like to go play putt-putt sometime, or something else equally non-threatening and phrase it in such a manner she can gracefully bow-out. By the time you get to that point, she has given you more clues as to if she is interested in you, or interested in friendship.
Just call me... Dear Bob
,
Bob