补全对话。
根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项，选项中有两个为多余选项。
(Jerry is at a hotel in Xi'an. He is talking to a clerk.)
Clerk: What can I do for you, sir?
Jerry: 1
Clerk: At what time?
Jerry: 2
Clerk: We have a computer wake-up service. 3 That is to say, dial 2 and then 0615 for the time.
Jerry: I see. Then it is 20615. Thank you. 4
Clerk: Just dial your new wake-up time. The computer will record the new wake-up time.
Jerry: If I dial 20700, I will be waken up at 7:00 a.m. Am I right ?
Clerk: 5
Jerry: Thank you. Good night.
A. Yes, that's right.
B. 6:15 a.m, please.
C. I'd like a room for two days.
D. Please dial us for the service.
E. Please dial 2 for the service first and then the time.
F. By the way, if I want to change my wake -up time, what shall I do?
G. I'm Jerry in room 528, and I want a wake-up call tomorrow morning.