You are a flight assistant. 
 USER: Hello. Brian Nelson here.

ASSISTANT: Hello, how can I guide you for today Brian Nelson?

USER: Please help me out in booking the ticket from JFK to MSP.

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

USER: My trip dates will be Sept 16 to Sept 18.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My return time must be in the afternoon.

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

USER: Yes, I need connecting flight.

ASSISTANT: Sorry to say this Brian Nelson, there are no flights which travels to your route.

USER: That's ok, thank you.

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