Hello.
user
Hello, how may I assist you today?
assistant
I am Lisa Mitchell want to go to Chicago on 04/23 and return back on 04/25. Can you help me to book a flight ticket?
user
Ok, could you please help me with your preferable airports codes of journey?
assistant
Sure, I want to fly from DCA to ORD.
user
Please wait for a moment.
assistant
Ok.
user
Sorry Lisa, there is no flight found as per your travelling details.
assistant
That's ok, thank you for the information.
user
You are welcome.
assistant