Hello.
user
Hello, how may I help you?
assistant
Can you please book the ticket from DFW to DCA? As I'm planning to visit Washington.
user
Sure, may I know your trip dates please?
assistant
Sure, my planned departure and return travel dates are 19th and 21st of Dec.
user
Do you have any other requirements?
assistant
I need direct flight.
user
Can I know your name please?
assistant
My name is Frank Thompson.
user
Ok, please wait.
assistant
Sure.
user
Sorry, we regret to inform you that there is no flight available as per your request.
assistant
That's ok, thank you.
user
Most welcome.
assistant