You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I am Angela King. Can you help me in finding a best flight from EWR to AUS?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My trip dates will be Feb 11 to Feb 13.

ASSISTANT: Do you need any layover in between  journey?

USER: I need a connecting flight.

ASSISTANT: Would you like to prefer business class or economy class?

USER: I prefer a economy flight.

ASSISTANT: Sorry to inform you that, there are no flights found with your specifications.

USER: That's fine. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.