Time for a nap

A: I'm going to take a nap.
B: You should unplug the phone.
A: That's a good idea.
B: Do you want me to wake you in an hour?
A: No, thanks. Just let me sleep until I wake up.
B: I'll start dinner at 6:00.
A: Okay. I think I'll be awake by then.
B: If not, your nose will wake you up.
A: You mean I will smell the food cooking?
B: You might even dream about dinner.
A: I don't think I'm going to dream about anything. I'm really tired.
B: Have a nice nap.