Where did the conversation most probably take place?

W: Carter, is it possible to borrow your notes? I’ll return them tomorrow.
M: Sorry, but I usually go to the cafeteria and review them. Say, how about copying them over in the library?
W: Okay, I think I’ve got enough coins for the machines. You’re a lifesaver, Carter!
M: No problem. But I don’t understand why you need my notes, Holly; you haven’t missed any classes.
W: Weekday mornings, I’m a cashier at a coffee shop downtown. After work, I come directly to school, and, boy, am I beat!
M: Wow, you’re probably exhausted!
W: That’s exactly why I want to borrow your notes. I’ve been nodding off during class, so my notes aren’t very good.
M: Listen, I need someone to study with, and you need someone to keep you awake; want to be study partners?
W: Yeah, I’d appreciate it.
M: Okay, let’s start today at the library. We’re going there anyway, and I don’t have to go to the cafeteria.
W: Sounds good.  Oh, no, here comes Professor Smith.  It seems he’s brought along more slides today. Elbow me if I start drifting off.
M: I’m afraid I won’t be very helpful; his slides make me sleepy too!