Steering off topic a little, but Ive always kept it EXTREMELY professional at work. A simple, "Hi, how are you?" and a smile is all I really give. Of course I will engage in chit-chat, but I keep it very superficial.
You tell a woman that you like her dress, you're ass is canned if she reports you. You ask a woman what she is doing for the weekend, she interprets it as you asking her on a date. Youre ass is canned.