急急急!!!帮编一段对话,秘书接见有预约的来访者,要求英语,不要太长谢谢

John Smith:visitor
Mary : sectory
Bill Walker: Manager

John: Hello. My name is John Smith. May I speak to Mr Walker.
Mary: Do you have an appointment with Mr Walker?
John: Yes. I have an appointment with Mr Walker at 9 am today.
Mary: Pleast wait a second.
then Mary talked to Mr Walker by the speaker:Mr Walker, Mr Smith came to see you. He said he had an appointment with at 9am this morning .
Mr Walker: Mr Smith? Oh yeah. Let him come in.
Mary: Yes.
to John: Mr Smith. you can come in.
John: Thanks.