You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please. help me in booking my flight ticket from ORD to DTW?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are 11/01 and 11/03.

ASSISTANT: Ok, could I have your name please?

USER: Myself Justin Lewis.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: No problem, thanks for checking.