You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, please share me your travel dates.

USER: My travelling dates are from 01/17 to 01/19.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a direct flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Myself Steven Scott.

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

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for opting us.