Ok after reading many of the articles and tips on this forum I went out and tried sarging at a local pub/club that I rarely go to.
I opened up a 2 set without any social proofing, 1 HB6 (Hey, baby steps right?) and 1 UG5.
I aimed medium as it's my first time and I didn't feel ready for the onslaught that is 8+!
Anyways, managed to get a rapport going with HB6, ignoring a couple of bitch tests from UG5 and got a K-close + # when the UG5 went off to get us drinks.
Anyways, fast forward today, texted her saying
Me: "I'm going for a coffee that a friend recommended, you should try it out too, expand your horizons".
Her: "haha ok?"
Me: "I'm heading to xxx, I'll be there at 2, dont keep me waiting."
Her: "I wont

See you there."
Now I've received this
Her "I can't make it for 2, can we do summin a bit later?"
Now I know this seems like an innocent request but I was wondering how do I keep up the dominance and value whilst remaining flexible?
Should I just say something like "I guess I could make some time for you later on, give me a big heads up though I'm a busy guy!". ?
I'm still a bit newbish to all this!