Trust me, if the girl is really interested, she will go out of her way to get together with you. At this point in my life, I am so busy and so focused on myself and my goals that I am a lot less focused on acquiring a woman. At the same token, I have much less time for their BS, attention seeking, or flaky behavior.
With that said, I work in the service industry as a bartender, so I am in constant contact with women. From time to time, these women will flirt with me, get their friends to hook us up on the spot, or outright ask for my number, as I could really care less to approach right now, however, I am not going to turn down a hot girls advances. The most recent times that come to mind all turned out to be flakes. Maybe I am too direct, maybe it would be better for me to exchange multiple texts to build some rapport, but honestly, I just don't care. I change how I approach these text convo's with each different girl, I guess for experimental purposes. The minute I sense flakiness, I just stop replying. But, as I stated earlier, I just don't really care right now.
I say all that to say this. My best advice is to try to initiate an "instant date" when you are approaching these women. Grab some coffee and chat for about 10 minutes, then you have some face to face rapport built. I feel like if you cold approach a girl, get her number, and text her to set up a date, she is way more susceptible to flake on you because she does not really know you. Even with the instant date and rapport building, she still may not be interested and she still may flake, its all part of the dating game.
Another piece of advice, switch some things up in your text game. If something doesn't work, try something different. If you are usually really subtle and indirect, try texting the next girl and be super direct. Einstein said that the definition of insanity is to continue the same behaviors and expect different results. There is no correct answer, it just goes back to the fact that, if she is really interested, she will not flake. As Die Hard said, if they do not pursue real life contact after you have offered the opportunity to do so, NEXT HER. Simple as that.
One last thing I must add regarding flaky women. Don't beat yourself up over it. The majority of the time, its not you, its them. Women constantly change their minds. A year or so ago I was texting back and forth with this girl, made plans 3 weeks in a row, each time with her giving me an excuse to not meet (I know, I should not have gave her another chance after the first time she BS'd on me). Well, I got a new girlfriend a month later, and throughout the following year she would text me here and there, I mostly ignored them or gave her vague responses, well eventually she ends up confessing her undying love for me (women...sheesh).
When me and my current ex and current baby's mama (lol) broke up, I took the former flaky girl out. I wasn't really feeling it, but I ended the night with a makeout session anyways, to have her text me 20 mins later saying "OMG I can't believe I finally got to kiss you" and "Best date ever".
It's almost like that movie 50 first dates with adam sandler. He could not attract the very same girl everyday. Some days he would get a date with her, some days she would blow him off.
Damn this reply got long, but I just wanted to say all that so that you would realize that it's not always your fault or your "lack of game" or should I have been ****y and funny? Did I not demonstrate higher value enough?
It's so easy to blame ourselves or beat ourselves up. Sometimes the interest is simply not there, or the girl is gay, or she, as in most cases, is just looking for some attention, or she is trying to make her current boyfriend jealous. The list could go on and on why a women will either reject you or flake during the initial date setup. Who cares why, just move on to the next one if she makes it impossible to meet up with her.