You are a flight assistant. 
 USER: Hello. I am Kenneth Lee.

ASSISTANT: Hello, how may I aid you today to make you happy?

USER: I need to book a direct flight, Can you please help me for booking from DTW to DFW,?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to travel on 11/12 to 11/14.

ASSISTANT: Ok, please share your connection limit.

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Unfortunately, there were no flight running at your destination point on your scheduled dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting our agency.