"O I got a boyfriend too... it's kool, so what's your number 07...?" (If I have a wing, I'll usually just point to him at the bar or where ever he is and he will wave or something haha)
"Kool i'll take him out too! so what's your number 07...?"
They usually work for me most of the time, but if all looks lost and she looks like she needs that extra push, I bring out the big guns.
It's the one Vince Vaughn used on Jennifer Aniston in the "Break-up".
"O are you going to marry him?"
Hb: Umm I don't know
DJ: I see so you are unsure, that is understandable, you are looking for that one right, but how would you ever know who it is unless you see what else is out there. Because otherwise you will always be unsure.
HB: I guess that makes sense
DJ: ok then so what is your number...? (This is worked on a semantic level, rather than an implicit level like the joke and laugh than the last one, so in my opinion no need to cue with the area code. She will know if she wants to give you that number by the end of it)
I only pull that one out for the special occasions (Super HBs), as it can tend to be longer than what I described there and I get a lot deeper into it, by the end she is saying "you are completely right!". Worked 3/3 times for me.
The first two I have probably used about 50 times and have usually worked for me 2/3 times, with the first one being better.
It's more about the attitude and confidence though and if this is dominant enough she will submit into taking your perception of the world rather than her current one.