When does the conversation probably take place?

W: Sorry I’ m late, Jason.
M: That’ s all right, Rachel. Where have you been?
W: At the police station. I’ ve lost my handbag. Or perhaps someone’ s taken it. I’ m not even sure when I have lost it.
M: Oh, no. That sounds terrible. Sit down and think it back carefully. Was there anything important in it?
W: Of course! My checkbook, and all the papers I need for work.
M: Oh! But how did you lose it?
W: Well, as you know. I was with a friend all morning and we had lunch together. After lunch, 1 went shopping. And when I wanted to buy something;. I couldn t find my checkbook. Then I remembered that it was in my handbag.
And my handbag was in my car.
M: So you went back to your car.
W: Yes. But I didn’ t find it there.
M: And then you went to the police station?
W: Not immediately. Before I went to the police station. I called my friend.
M: You should go to the restaurant where you had lunch and look for it.
W: Oh, I never thought of that.
M: You’ d better telephone the manager right away.