Your mileage may vary but the other night I had a girl try to flake on me for one reason or another last minute. In her defense she tried to set up a different day. I however am booked for a while doing awesome things and I didn't give her a hard time but instead told her that it was cool and the rest of my week was booked so I'll catch her some other time.

The old me would have changed all my plans to accomodate but know your time is valuable. If you believe it they will as well. Suddenly she wasn't so busy anymore and didn't flake. Granted if a girl flakes and isn't interested she probably won't care but in this case she unflaked (is that a word?)

Your time is valuable. Remember that.