You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Could you please help me to book a direct flight from Washington to visit Independence Hall in New York?

ASSISTANT: Sure. Please share your travel dates to book the ticket?

USER:  I  am planning to start on Oct 2nd and my return date will be on Oct 4th.

ASSISTANT: Do you have any connection limit preferences?

USER: I have already mentioned above.

ASSISTANT: May I know your name please?

USER: I am James Phillips.

ASSISTANT: Do you need any class preferences to travel?

USER: No, I don't have any class preference.

ASSISTANT: Please share your nearest airport codes?

USER: I want to start my journey from IAD and my destination airport code is JFK.

ASSISTANT: Sorry, no flights found as per your preferences.

USER: That's ok, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for choosing us.