What is the relationship between the two speakers?

(Agent = woman, Customer = man)
Agent: I’m sorry I’m late. Have you been waiting long?
Customer: No, I’ve only just arrived.
Agent: Oh, good. Now, here are the keys. Let’s go in. There are two apartments. The one for rent is upstairs. Customer: Is there a garden?
Agent: Yes, you’ll share the garden at the back. Customer: That’s fine. Agent: Do come in.
Customer: Thank you. I like the carpet.
Agent: The colors are nice, aren’t they? This apartment is in good condition. Here is your lounge.
Customer: Where would we eat?
Agent: There is this corner here or you can use your kitchen. Come and see.
Customer: The kitchen is quite small.
Agent: Yes, but it has everything, cooker, fridge, washing-machine, even a dishwasher.
Customer: And there are lots of cupboards.
Agent: Let me show you the bedrooms. This is the smaller one.
Customer: It’s a good size though. Is all the furniture included?
Agent: Only what is fixed. You will have to provide tables, chairs and beds.
Customer: That’s a lot.
Agent: You can buy things cheaply from second-hand shops or at auction.
Customer: What’s an auction?
Agent: It’s where the person who offers the highest price buys the article.
Customer: Is that a crack in the ceiling there?
Agent: Yes, I’m afraid it is but it can easily be repaired. I will see to that. Come into the other bedroom. You can see the bathroom too.
Customer: Yes, it is very nice but I will have to ask my friend first and we will come together. I understand it is eight hundred dollars a month.
Agent: Yes. But a few blocks downtown would be much more expensive.