You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to fly from LGA to AUS. Can you check the flight availability on that route?

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

USER: My planned travel dates are 11/01 and 11/03.

ASSISTANT: Do you have any other requirements?

USER: I want a connecting flight with in the business class.

ASSISTANT: Can I know your name please?

USER: Justin Lewis here.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: No issues, thank you for the information.

ASSISTANT: Most welcome.