You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can you help me in doing a reservation from DFW to DTW?

ASSISTANT: Sure, can I know your good name please?

USER: I am Amanda Rodriguez.

ASSISTANT:  When you are willing to travel?

USER: My trip dates are June 23 to 25.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a direct flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No, please go ahead.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.