Hi.
user
Hello, how may I help you?
assistant
I am Joseph Wright.
user
Nice to meet you Joseph.
assistant
I am planning to travel from PHX to DCA, can you help in booking a flight ticket?
user
Sure, may I know your trip dates please?
assistant
My travelling dates are 07/25 to 07/27.
user
Sorry to inform you, there is no flight available as per your request.
assistant
That's ok, thank you for your help.
user
Most welcome.
assistant