You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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 travel dates?

USER: My travelling dates are Aug 08 and Aug 10.

ASSISTANT: May I know your preferred airport codes?

USER: My airport codes are AUS and LGA.

ASSISTANT: Ok, do you have any preference about the connection limit?

USER: I prefer single connecting flight.

ASSISTANT: May I know your name please?

USER: My name is Ryan Taylor.

ASSISTANT: Sorry, there is no flight found with your travel dates.

USER: Anyway, thanks for the information.

ASSISTANT: You are welcome. Thank you for choosing us.