Hello,.
Hello, how can I aid you?
I am Anthony Davis, I want book reserve a ticket from Detroit  to Chicago.
Sure, could you please provide your travelling details?
Yes, my depart day is on Sept 30 and return day is on Oct 2.
May I know airport codes?
And my origin airport is MI - DTW and destination airport is IL - ORD.
Sorry, there is no flights found based on your details.
OK, no problem.
Thank you, have a nice day.