You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Can you book a flight ticket from DTW to PHL?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: Nov, 28 and Nov, 30 are my planned travel dates.

ASSISTANT: Do you need any connecting flight for your journey?

USER: Yes, I need connecting flight.

ASSISTANT: Please provide your name for reservation purpose.

USER: Donald Robinson here.

ASSISTANT: Do you need any other requirements for your journey?

USER: No, thanks.

ASSISTANT: Sorry to say this Donald Robinson, there are no flights which travels on your region.

USER: That's ok, thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.