You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Deborah Nelson.

ASSISTANT: How can I help you today?

USER: I am looking to book a flight ticket from DTW to DFW, can you help me with that?

ASSISTANT: Can you share me your trip dates?

USER: Sure, I want to take off on Oct 12th and my return date is on Oct 14th.

ASSISTANT: Do you need any connection limit?

USER: please look for a connecting flight.

ASSISTANT: May I know your preferable timings?

USER: I want my return flight during evening.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: There are no flights available on your routes.

USER: That's fine, Thank you for your help.

ASSISTANT: Thank you for opting us.