You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to attend a Seminar in new York. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travelling dates are July 14 and July 16.

ASSISTANT: Can I know your specific airport codes?

USER: My airport codes are DEN and LGA.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer direct flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: George Edwards.

ASSISTANT:  Is there any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for connecting with us.