When do you think this conversation took place?

M: Do you know if the book shop is still open?
W: Yes, it’s open till six.
M: Thanks a lot.
W: You are welcome.

M: Honey, we’ll have a guest from Australia, a friend of mine. He’ll stay in California for two weeks.
W: Yes, your friend Andy. He was your classmate at London University, wasn’t he?
M: Yes, he was. We haven’t met for years.
W: So you two could have a good time together.