听力原文：W: Mr. Smith, you're going to be staying at the Dhaka Plaza Hotel for the first two nights of your trip, then you'll be going up to Bogra, where you'll be staying with the field officer Roland Headly, for three nights. Then, you'll be heading back to Dhaka Plaza for the last night. M: Thank you, Penny. Have you had a chance to find a different travel route? Those stopovers will consume a lot of time. W: Yes, Mr. Smith, I found you a red-eye flight from Toronto to London with just one stop over of two hours and then directly onto Dhaka. M: Very good. If I'm leaving on the redeye, it will mean I can make that family dinner with the Singhs. I'll most likely sleep during the trip, which will help with adjusting to the time difference. What is the main purpose of the discussion?