Hello,.
user
Hello,. How can I serve you today?
assistant
I am Jonathan Thomas,I want to book a flight ticket from Dallas, TX- DFW, to Chicago, IL - ORD.
user
May I know your travelling dates?
assistant
Sure, I need the booking to be done on Feb 17th as depart date and Feb 19th as return date.
user
Based on your information there is no flight found.
assistant
OK, that's fine. Thank you for the details.
user
Thank you for choosing us.
assistant