You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me to search a flight from Austin, TX-AUS?

ASSISTANT: Please provide your trip dates.

USER: The trip dates are 04/10 to 04/12.

ASSISTANT: What is your destination airport code?

USER: The destination airport code is CO-DEN.

ASSISTANT: From AUS to DEN, no flights are available.

USER: Ok, no problem.

ASSISTANT: May I know your name?

USER: My name is Amy Lewis. Thank you for your information.

ASSISTANT: Most welcome.