Who is speaking to Mrs. Jim?

W: Hello !
M: Hello! May I speak to Mr. Jim, please?
W: He’s not here at the moment. May I ask who’s calling?
M: This is Zhang Hua speaking. I’ve just arrived in Los Angeles from China.
W: Oh ! Mr. Zhang. How nice ! This is Mrs. Jim. I’ve heard Jim mention your name but we didn’t know you’d arrive so soon. How many days will you stay in Los Angeles?
M: About a week or so. And then I plan to go to San Francisco for a few days.
W: Oh! Is there a number where I can. reach you?
M: I’m staying at the Airport Holiday Hotel. The number there is 646-3100.  My room number is 264.
W: When Jim comes back, I’ll tell him that you’re in town, and we must spend an evening together.
M: That’ll be very nice.
W: When is it most convenient to call you?
M: Anytime between seven and ten p. m. would be fine.
W: OK ! We’ll call you.
M: Then I’ll be talking to you soon. Bye.