Originally Posted by Varius

First, you need to distinguish between "is she being friendly to me because its her job and she wants a nice tip" or "is she being friendly to me because we seem to get along / she's actually into me".

From there you know what approach will work on her; the flash the cash take her to a million expensive dinners to get in her pants OR the just act cool and ask her to grab some late night food after her shift or to hang out.