You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Emily Thompson. Can you help me with booking ticket from AUS to SEA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Ok, my travel dates are from Sept 16 to 18.

ASSISTANT: Please wait for a moment.

USER: Ok, I need a flight in business class.

ASSISTANT: There is a flight with the flight number 1007 of fare 100 with Delta airline, are you ok with this booking?

USER: Proceed with booking.

ASSISTANT: Sorry, there is no flight found in business class.

USER: Thanks for your help. It's ok, thanks for your information.

ASSISTANT: You are welcome.