Dear Sir or Madam: I would like to apply for the post of waiter in your hotel.My name is （你的名字）and have(你工作的几年）year working experience.I suppose I am the person who is easy going and dilligent.I hope that you will be kind enough to consider my application favorably. yours sincerely某某某 应该可以用啊，比较简单。

这是正规信的格式。祝你成功