Hi, I am Scott Wilson.
user
Hello, how may I support you today?
assistant
I need to book a flight ticket from Washington to Chicago on 10/21 and return on 10/23, can you help me with it?
user
Sure, may I know your source and destination airport codes?
assistant
Yes, my airport codes are DC-IAD and IL-ORD.
user
Thank you for your details, there are no flights found with your specified dates.
assistant
That's ok, thank you for the response.
user
Thank you for reaching us.
assistant