Work

Well today is my first day not working. I am really pissed at my boss because I sent him a e-mail telling him I want to work next summer. Then, he e-mailed me back and said that he hopes it will work out for me next year. I mean how can I make sure that I get the job next summer? I couldn't of asked any earlier. The only thing I can think of is for some unknown reason he doesn't like me.