Excelent begining, but here is what I would of said diffrent.
ME: Hello?
HER:Uhh hello
ME: who is this!?!
HER:who is THIS!?
PUA: Clearly this is the MAN you desired to speak with since you called me.
HER:haha no i didnt you did...
PUA: Clearly you're mistaken, but don't worry I wont count you out just yet.
PUA: But to refresh you're memory I am PUA from the club
HER:OHH HEY!
ME: we have unfinished business...
HER:oh really haha? like what?
ME: i think you know...
HER:well my lighter is working fine so it cant be that (i told her i was a disposible lighter repairman at the club)
PUA: (Lite Chuckle) Wonderful, now I know your not the type of girl to just use me for my many tallents
PUA: Actually i cant talk long im about to go somewhere. I'm going to be stopping off for coffee @ 6:30 tomorrow. If your in the mood for something warm and some stimulating conversation call I'll reserve a quite little spot for us.
HER:MAYBE!(more of an excited tone of her voice so dunno what to make of it)

: what exactly is the definition of maybe anyways? (this is bad. It makes you sound needy and as if you don't understand her.)
HER:I have to see what is going on tomorrow first
PUA: Okay ill pencial you in for tomorrow at 6:30 if anything changes I'll call you.
HER: bye