补全对话(每空一句)。

(At Mr.White's office in a middle school )

A: Hello!__1_   ?

B: Speaking, please.?

A: I'm Peter's mother.I'd like to ask for my son.

B: __2_  ?

A: He doesn't feel well this morning.He has a cold.

B: __3_  . Is it serious?

A: Not very serious.But the doctor asked him to stay in bed and have a good rest.

B: Don't worry. __4_  .

A: Thank you, sir. Goodbye!

B: __5_  !