Conversation According to the man, why are so few study rooms available?

W: Excuse me. Could you please tell me if there are any study rooms here in the library?
M: Yes, urn, most of the rooms have already been reserved, but I think we have a few left.
W: Do you mean I have to reserve it ahead of time?
M: Oh yes, and the sooner the better. The rooms on the third floor are already completely booked for the quarter.
W: Oh. Um ... how does it work then—I mean how can I—do I just sign up here for the times I want?
M: Yeah. Usually people want an hour or two at a time. You’re limited to ten hours a week—that’s if it’s available. Like I said, we’re fairly booked up. You really need to come in early in the quarter, or before the quarter starts would be even better.
W: Wow! I didn’t realize space was so tight.
M: Yeah, it’s true. Enrollment is up 12 percent over last year, and it really makes a difference. So, um, what would you like to do?
W: Well, actually it’s for me and two of my classmates. We’re working on a presentation together, and we need a quiet space to meet and talk.
M: What time of day do you want—morning, afternoon, or evening? There are more rooms open in the evening.
W: One of my classmates is a commuter—she carpools from Spring Valley and has to leave campus at six o’clock. So evenings wouldn’t work. Actually, um, I think afternoons are best for all of us. Is there anything available ... like, after three o’clock?
M: Let me check. That’s always a busy time.
W: Oh ...
M: Wait a minute. I just thought of something. Does it matter if it’s in the Communications Building? They have some rooms over there.
W: Well, sort of. We, urn, we were hoping to be here in the library.
M: The Communications Building is the one just behind us. You can even get there from the ground floor of this building.
W: Oh, really? I didn’t know that. Well then, maybe we could try that. Did you say they had rooms available?
M: Yes. They have rooms ... it looks like from one to five every day of the week.
W: Great! Can we reserve one of those, urn, from three to five o’clock ... on Tuesday, Wednesday and Thursday? Starting tomorrow?
M: Sure, I can do that. I just need to see your student I.D.
W: No problem.