Dear Smith
I happened to have read your advertisement and decide to apply for the job. I am a 17－year－old senior 2 student .I'm healthy and helpful as the ad asked. More over,I often talk with foreigners in the English Conner, so I think my spoken English is OK. I'm sure I can be a good translator and an excellent waiter. The most important is that I have an advantage that others may no have. That's I have ever learnt the knowledge about service of western meal and very interested in about it. I think I can be your good asssist. I don't mind work for free,I just want to get a special experience before I enter university. So if you give me a chance, I will try my best. Looking foraward to your reply.
Your's,
Lihua.