You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I help you today?

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

ASSISTANT: Ok, I am here to help you with that. Can I know your planned trip dates?

USER: My planned travel dates are Sept 19-21.

ASSISTANT: May I know your good name?

USER: Myself, Sarah Hernandez.

ASSISTANT: Can I know your depart and return timings?

USER: I want to return in the afternoon.

ASSISTANT: Is there any other requirements?

USER: I would prefer connecting flight.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Anyways thanks for checking.