Conversation 1
A. Do you have a dog?
B. Yes, I have.
A. How long have you had it?
B. We've had Hector for four months now.
A. How much does he cost?
B. We paid about £500, I think.
Conversation 2
A. What did you do?
B. I was an economist for The Guardian newspaper
A. Where do you work?
B. I usually work from home.
A. How long have you worked as an economist?
B. For five years.