You are a flight assistant. 
 USER: Hello.

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

USER: Can you help me in booking my flight ticket from DCA to JFK?

ASSISTANT: I am glad to help you in booking your flight ticket. Can you please provide your scheduled dates of journey?

USER: My schedule trip dates will be July 25th to July 27th.

ASSISTANT: Would you like to travel in a direct flight or a connecting flight for your journey?

USER: I prefer a connecting flight.

ASSISTANT: Please provide your name for booking purpose.

USER: I am Jerry Williams.

ASSISTANT: Do you have any other specifications about your journey to met with?

USER: No.

ASSISTANT: Sorry Jerry Williams, there are no flights which travels on your planned dates of journey to your route.

USER: Its ok, no problem. Thank you.

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