Hello.
user
Hello, how can I aid you?
assistant
There is an event in White House, I got a invitation from White House  for the event, so I want to book a ticket from Phoenix.
user
That's good to hear. Then what are your planning dates?
assistant
I am departing on 10/21 from Phoenix-PHX airport.
user
Ok, may I know your returning details?
assistant
My return date from Washington-IAD airport is on 10/23.
user
May I know your respected name please?
assistant
My name is Edward Parker.
user
Ok Edward, sorry to tell you that there are no flights available on your preferred dates. Do you like to prefer any other date to fly?
assistant
No thanks, I will check for other alternatives.
user
Would you like to have any other help from our end?
assistant
No, thank you for asking.
user
That's my pleasure.Thank you .
assistant