You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking my flight ticket from DEN to AUS?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are Dec 30 and Jan 01.

ASSISTANT: Do you need a connecting flight?

USER: I need direct flight.

ASSISTANT: May I know your other specifications?

USER: I need my ticket in economy class.

ASSISTANT: Can I know your name, please?

USER: Myself Carol Brown.

ASSISTANT: We could not find any flight on your request.

USER: Ok, fine thanks for your information.

ASSISTANT: Thank you for choosing us.