Hello.
user
Hello, how may I aid you?
assistant
I am Elizabeth Parker. I heard that Washington is a best place for site seeing, Can you please book a ticket on 09/21?
user
Sure, may I know your airport codes?
assistant
Source code is Chicago, ORD and landing point is Washington, DCA.
user
Can I know your other date of travel please?
assistant
Return is on 09/23.
user
Sorry, there were no flights found on your route.
assistant
No problem. Thank you.
user
Thank you for opting us.
assistant