This dialog is for questions 15 to 17.

Nadya: It has been 6:30 PM, but father has not arrived home.

Edwin: Well, he is very busy recently, so he has to work overtime.

Nadya: He must be very hungry. I want to deliver a dinner for him.

Edwin: Do you mean that you're going to father's office? It's raining. you know.

Nadya: No. I am going to reserve food for him online.

Edwin: That's a good idea, but we don't know whether father has already had dinner.

Nadya: We had better call him for confirmation.

Edwin: O.K. I'll call him now. You can open the application and choose the menu.

Nadya: All right.

What are Nadya and Edwin like?