User: I need to book two tickets. My plans might change, so I need refundable tickets only. My departure location is Vancouver, BC. We'll be departing this Sunday, on our way to Phoenix, USA.
Assistant: Wonderful! Can you confirm the following details, please? Your flight is from Vancouver and it goes to Phoenix. The airlines are with Delta Airlines in Economy seating. The departure date is the day after tomorrow. The number of passengers is 2.