SpeakerA:Hello,MayIspeaktoMr.Smith?SpeakerB:___________A.Yes,I am Mr. Smith.B.No,
Speaker A: Hello, May I speak to Mr. Smith?
Speaker B :___________
A.Yes,I am Mr. Smith.
B.No, he is not in the office right now.
C.Speaking!
D.He is not here. Can I speak for him?