How to get this (and other) HB hooked? BIG sticking point

so i met this girl through a friend. We hung out a few times at school, and we eventually exchanged #'s.. I started txting her, but its been pretty dry, and i need advice as to how i can turn situations like this into a hook. heres the excerpt

Me: thx for the flowers "secret admirer"
Her: ahahahaha you wish
Me: No? Dang.. Either way u can keep my gift under 200$
Her: Keep mine over 200
Me: Dont try to one up me
Her: Kay over 199.99
Me: Youre just asking for trouble pumkin head
Her: K i will take two chanel perfumes

at this point, it was late, and i didnt feel that banter would get me anywhere so i let it lie.. i thought about disqualifying too, but i wasnt sure if that would be the right way to go either, as we still dont know each other (something about chanel not being classy blabla).. that said, whats the right thing to do? When we're together, theres plenty of ioi's, & which prolly means shes playing hard to get, rather than being aloof

thx

Ha, that's actually quite a good convo in my opinion. She's clearly having a lot of fun with you so you're already set. pumkin head wasn't really necessary though, you can do better than that I'd say all that's left is to throw in a few flirts on a more sexual level. maybe something like 'maybe you'll get that chanel if you earn it lol'

'Wow, you're so sassy. I could put you in a sass-o-matic and get sassy juice outta you "