What is the conversation mainly about?

M: Hi, is that Miss Braithwaite?
W: Yes, speaking.
M: Hello, it’s Jim, a freshman from the Medical School.
W: Hello, Jim. How can I help you?
M:(8-1)Could you please give me some information about the exam schedule?
W: OK. The dates for the first semester are Nov. 11th to 24th. The dates for the second semester are May 17th to 30th.
M: I see. And how long are exams?
W: Exams are normally three-hour long. You must book a room for a three-hour exam in advance. The department will arrange an invigilator. Early next month, there will be a sign-up sheet posted on the bulletin board in the faculty lounge.(9)You can choose a specific date on this draft schedule.(10)The Dean then receives it, and then draws up the final schedule to avoid students having two exams scheduled at the same time.
M: That’s a good idea.(8-2)So I just have to sign the sheet in the faulty lounge telling when I want my exam.
W: Yes, it is not at all certain when the exam will be, but it gives the Dean a place to start. He still has to do most of it manually, consulting his computer to see which students registered in each course have ordered exams. Doing an exam schedule is quite complex. Quite often, he consults the schedule from the previous year.
M: Thank you very much.
W: You are welcome.