You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, please share your journey dates?

USER: My planned trip dates are Mar 04-06.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any airline preference?

USER: I want to fly in normal cost airline.

ASSISTANT: May I know your name please?

USER: My name is Patrick Robinson.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.