What is the possible relationship between the two speakers?

W: I took a hike with my parents this weekend.
M: Oh, that must be fantastic. Where did you go?
W: Not far away. We just went to the small hill two kilometers away from my house. But I do enjoy the beautiful flowers and blue sky there.
M: I believe you and your parents must walk a lot, but why do you come to the library so early? Don’t you need more rest?
W: I have a paper to work on. And I have to finish it by the end of this afternoon.
M: Well, What else did you do during the hike?
W: Yeah, it sure is. There is a small lake at the foot of the hill and its water is clear enough to see the fish in it.
M: Fish? Did you catch any fish?
W: I wanted to, but it is winter now, the water. It’s freezing.
M: What a pity. Did you take any photos?
W: Of course, hundreds of photos
M: Well, I can hardly wait to see the photos.
W: They are all in my computer. I can send them to you by e-mail tonight. I have to get back to my paper. You know I don’t have much time left. I will talk about it with you later.