Hello.
user
Hello. How can I aid you?
assistant
 I am Christopher Smith want to attend food festival at Houston,TX-HOU with my friends. Can you book a ticket from DC-IAD?
user
Sure, I can help you out. When would you like to travel?
assistant
My travel dates are. My travel dates are 12/20 and 12/22.
user
Do you need connecting flight?
assistant
 I need a connecting flight.
user
We found a UA airline, flight number:1027 and the price is 200.
assistant
 Ok, you can proceed with the booking.
user
Your flight ticket has been reserved.
assistant
 Thank you for booking.
user
Thank you for consulting us.
assistant