You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you aid me to book a flight ticket from BOS to DTW?

ASSISTANT: Can I have your trip dates?

USER: My trip dates are June 17 and June 19 respectively.

ASSISTANT: Do you need any connection limit?

USER: I prefer for a direct flight to travel.

ASSISTANT: Do you need any other specifications?

USER: No other specifications for me.

ASSISTANT: May I know your name?

USER: Paul Scott here.

ASSISTANT: There are no flights available on your routes.

USER: Thank you for the help.