A: Hello!. Who is that?

B: Hi, David! It's Mike here..

A: I'm in Beijing now.

B: That's great. How's it going?

A: Not bad..

B: Very good..

A: It is raining in Beijing.

B: Well, it's sunny in our city. What are you doing?

A: I'm watching TV. Are you doing your homework?

B:. I'm playing the violin.

A: That sounds great. Bye!

B: Bye!