You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, can you share me your travelling airport codes?

USER: My airport codes are LGA and BOS.

ASSISTANT: Please mention your trip dates.

USER: My travelling dates are Feb 04 and Feb 06.

ASSISTANT: Do you have any specifications?

USER: I prefer business class. I prefer direct flight.

ASSISTANT: Can I know your good name?

USER: My name is Kenneth Moore.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for contacting us.