It's okay to get ticked when a chick flakes... It's NOT okay to lose your cool and show your disappointment.
I've been flaked on so many times I've lost count. Some of these chicks I ended up sleeping with.... if she likes you she will come around. Many have told me that they found it very attractive that I didn't lose my sh1t over a cancellation. Why? Because I always plan things I'm going to do anyway, and I invite women along... if she cancels, no problem I just ring up one of my friends and keep going. I always tell the chick "Hey, no problem, just let me know when (you are feeling better... not so busy... not so tired.... you find your cat.... blah blah blah etc etc) and we can reschedule." Then I'm done, she won't hear from me again unless she reaches out.
This guy lost his sh1t because he had the whole date planned around this chick... and when she can cancelled his plans were ruined and he felt disrespected. You can't be disrespected by someone you don't know and care about it... if you lose your sh1t someone you don't know and will likely never see again, you do not have any emotional self control. He was also getting ahead of himself... he didn't know a fvcking thing about her. You date to get to know someone, if a chick cancels on you and doesn't try to reschedule, then you learned everything you need to know about her without spending a dime.