Most Helpful Girls
we don't use words and lines a lot like men do
we usually just show more attention to the guy we like..
for me.. the way I look at the guy, smile, laugh, and talk
I'm not much of a flirty person
if I like a guy i just make sure I contact him and just keep on talking and chatting with him
We laugh at jokes that aren't funny, smile, nod, give compliments, play with our hair, expose our necks, lean in closure (sometimes showing cleavage if outfit permits), let one thigh brush against theirs, accidentally touch toes, change speed of our talking from normal to fast to slow to keep your attention, try to be "mysterious" by saying things like you don't know me, offer to buy a drink, ask if someone has a girlfriend, pay the tab before the man can, go to bathroom and reapply makeup or perfume, we'll ask you to dance or do something adventurous/try something new, we'll suggest a vague meeting again so you'll ask for our number.
Most Helpful Guy
I would say most women flirt with body more body language then verbally flirting. Like standing extra close to you, light touching, strong eye contact, constant smiling, laughs a little extra at your jokes etc.