Rules to workplace flirting:
1) don't, unless the other party expresses interest.
2) stop immediately if the other party expresses any discomfort.
Rules to behaving like a human:
1) treat everyone with respect.
2) do not treat people disrespectfully.
Easy, isn't it.
No, girls like flirting (just like guys do) on their OWN terms. It has no place in a professional context. At a conference, or at work, I want to be treated like a professional. If you are busy thinking about whether I'm attractive or not, you're not thinking about what I'm saying.
Those who educate children well are more to be honored than parents, for these only gave life, those the art of living well. -- Aristotle