User: that's great for me. I am planning to go for a short trio. Can you please help me to book the flight tickets for four people in my group?
Assistant: Please confirm the booking details: The flight is from Vancouver to Portland. The airlines is United Airlines which departing on next Thursday and the return date is March 10th. The onward flight leaves at 6:05 pm and the return flight leaves at 10:35 am. The seating class is Economy which is for 4 passengers.