What is the probable relationship between the two speakers?

W: Hello?
M: Hello, Mary?
W: Hello, George.
M: Look, what are you doing on Tuesday night? There’s a great show at the Varsity Theater.
W: Tuesday night? Oh sorry, I’m planning to finish my term paper. It has to be in on Wednesday morning.
M: Oh well, never mind. Look, Wednesday, why don’t we go out for dinner, just you and me, nice and romantic. We could go to that little restaurant you like so much.
W: That sounds like a great idea, but I think I might have to help my roommate clean up the apartment. You see, we are having some people in on Thursday night, so we want the place to look really nice.
M: Well, that means you’re going to be busy Wednesday night too?
W: I’m afraid so.
M: Well, how about Friday night? There’s going to be a basketball championship at school. How about we go and root for the old Blues?
W: Yes, I was planning to see that, but you know what’s come up—it’s daddy’s birthday, so we are taking him out for dinner.
M: Well, I suppose you’re busy on Saturday night, too. I had planned to invite you to a concert, the Los Angeles Philharmonic.