Dear Sir or Madam,
I'm writing to apply for a job of waitress in your Tea room. I'm ..... years old and I'm a student at ........... Grammar school/ High school.
I'm interested in your job offer because Ii love contact with Customer and I enjoy goin from table to table to offer my services to clients.
I am extremely polite, very helpful and quite patient.
I would be a waitress in you Tea room because I think this job would be an enriching experience for me. Morevover, I'm very motivated.
Thank you very much for your time and attention. I look forward to hearing from you soon.