Dear Madam,

I am writing to enquire about the course that was recently advertised. I am very interested in this course because I would like to improve my knowledge and skills. However, the advertisement did not provide enough information, so I would like to ask for some further details.

First, I would like to know when the course will start and how long it will last. In addition, could you please tell me how often the classes are held each week and how many students there are in each class? I am also interested in the course fee and whether the learning materials are included in the

Finale, I would appreciate it if you could give me some information about the teachers and the certificate provided after finishing the course.

I look forward to receiving your reply.

Yours faithfully,

Doan