Hello, I am Michael Evans.
user
Hello, how may I aid you?
assistant
I would like to go to a event in Washington, so could you aid me in booking a flight ticket?
user
Sure, I will help you. Please send your travelling dates.
assistant
Sure, I would like to go on 07/28 and return back on 07/30.
user
Noted. Please send your nearby airport codes.
assistant
My source and destination airport codes are ORD and IAD.
user
Please wait for a while, I will check the availability.
assistant
Ok, ensure it is a single connecting flight.
user
Sorry, there is no flight available on your travelling dates.
assistant
That's ok, thank you for checking.
user
You are welcome, have a nice day.
assistant