You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket form DTW to CLT. Could you help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Nov 10 - 12.

ASSISTANT: On which name shall I reserve flight ticket?

USER: Jerry Collins.

ASSISTANT: Any specifications needed?

USER: I prefer for direct flight.

ASSISTANT: Please wait a moment.

USER: OK.

ASSISTANT: Sorry, there are no flights running on your route directly.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching your service.