Where did this conversation most likely take place?

W: Could you give me something for the pain? I feel terribly awful.
M: Aspirin is the strongest medication I can give you without a prescription.
W: That isn’t strong enough, and I don’t have an appointment with my dentist until next week.
M: Who’s your dentist?
W: Dr. Williams.
M: Doesn’t he have his office on the corner?
W: Yes, he does.
M: Are you a regular patient?
W: Yes.
M: Oh. Then I can call him if you like. Dr. Williams will give me a pain prescription over the telephone.
W: I’d appreciate that very much. Do you think that he’ll still be in his office?
M: Sure. It’s only four-thirty. He should be there until five.
W: Good.
M: That’s too bad you can’t get an appointment sooner.
W: I know Dr. Williams is always busy. He is always booked up though. I was lucky to get in as soon as I did.
M: In the meantime, be careful not to eat or drink anything too hot or too cold.
W: I really don’t feel like eating or drinking anything at all.
M: Well, I’ll give Dr. Williams a call and we’ll see what we can do for you.
W: Thank you.