A friend made an appointment to travel with you and suddenly went back on his word. What do you think of him?

Actually, it's useless to say anything. You can only say something that makes the other person feel guilty, and then you will be balanced. You said, "It's a pity that the original agreement suddenly changed, which upset all my holiday plans. If I knew I couldn't go, I would book a plane ticket to Macau in advance. This holiday was ruined. I can't go anywhere without booking a plane ticket, so I have to stay at home. It seems that I can't find unreliable friends in the future, pit ~! "