What’s it like to make an appointment with a friend to go on a vacation, but then get rejected?

A good friend made an appointment to go on a trip, but was rejected. It was a very bad experience because we had made an appointment to go on a trip. Why did you conflict and say that you had something to do? I think in fact If you fail to make an appointment midway, it’s not incomprehensible that you have something serious, but in fact you just have nothing to do, and you still do those boring things