Boyfriend being super flakey!!!

My boyfriend is always flaking on me. We haven't even hung out in like two weeks. I was supposed to go over to his house today but he has "work" to do for school 🙄. He promised me a week ago he would be free today but he just flaked. This happens 60-70% of the time we make plans. How do I tell him to stop flaking in a sugar coated way??