Hello.
user
Hello, how may I aid you today?
assistant
I am Edward Martin. I want to book a economy class flight ticket from Washington, Can you book a departure flight in the afternoon?
user
Sure, please share me your trip dates.
assistant
My trip dates are Mar 19 and Mar 21.
user
May I know your source and destination airport codes?
assistant
My source and destination airport code are IAD to AUS.
user
Ok, please wait for a while.
assistant
Sure.
user
Sorry to say that, there are no flights available based on your details.
assistant
Ok, no problem. Thank you.
user
Thank you for availing us.
assistant