dialogue: M: Good morning. This is John Parker speaking. I'm just ringing to confirm my appointment with Mr. Smith for this afternoon. W: Yes. Mr. Smith's expecting you at 3 o'clock.
question: Why is the man making the phone call?
choice: He wants to make an appointment with Mr. Smith. He wants to make sure that Mr. Smith will see him. He wants to change the time of the appointment.
answer: He wants to make sure that Mr. Smith will see him.