Read the following letter.

Read the following letter. > I was on a business trip when I received your email, and I have heard that you are not satisfied with the current course and want to change to another course. Could you tell me the reason why you want to change the course and which course you want to study? Write an email to the head of the department. In your email, you have to explain why you want to change the course, tell him the course you want to study, and thank him for his reply.