You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can 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, can you please mention your departure and arrival dates of your journey?

USER: My travelling dates are May 21 and May 23.

ASSISTANT: Please mention your travelling airport codes.

USER: My airport codes are IAH and LGA.

ASSISTANT: Is there any connection limit for you?

USER: I prefer single connecting flight.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer normal cost airline. I prefer business class.

ASSISTANT: Can I know your name for booking your flight ticket?

USER: My name is Nancy Scott.

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

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.