Hello. I'm Donald Edwards.
user
Hello, how may I help you?
assistant
I am planning to to attend live concert at Washington, can you please help me with booking a flight ticket?
user
Sure, please help me with your airport codes.
assistant
My source airport code is PHX and the destination airport code is DCA.
user
Ok, can you please tell me your travel dates?
assistant
Sure, I would like to take off on 01/14 and return back on 01/17.
user
Sorry, no flights are available on your route.
assistant
Ok, no issues. Thank you for checking.
user
You are welcome.
assistant