Hello.
user
Hello, how could I help you?
assistant
 I am Elizabeth Harris want to attend a meeting at DC-IAD. Can you book a ticket from DC-DCA.
user
Sure, please share me your dates of journey?
assistant
 My travel dates are 09/20 and 09/22.
user
Do you have any other requirements?
assistant
 I need a connecting  flight.
user
Thanks for waiting, we found a flight with AA airline of flight number 1007 with price 200.
assistant
Ok, you can reserve my ticket.
user
Your ticket has been booked.
assistant
Thank you for booking.
user
Thank you.
assistant