Who is the caller?

W: General Gas, can I help you?
M: Mr. Chandra Babu, may I speak to him?
W: I’ll put you through. Oh, sorry Mr. Babu isn’t in at the moment.
M: Can I leave a message?
W: Certainly.
M: Tell him to call Rickey Green at Six. It’s important.

W: Well, you ought to visit the exhibition. They are going to hold it over for another week.
M: Eh... Normally I wouldn’t but as you recommend it so enthusiastically.