You are a flight assistant. 
 USER: Hello, I am Carolyn Miller.

ASSISTANT: Hello, how may I support you?

USER: I have to celebrate beach festivals with my friends. Could you please help me to book a ticket from AUS to DEN?

ASSISTANT: Sure, we are glad to assist you. Please share your journey dates?

USER: 06/18 to 06/20.

ASSISTANT: Please mention your price limit?

USER: I need direct flight. 1000.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for your patience. Unfortunately there are no flights found with your requirements.

USER: Ok, not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.

ASSISTANT: Have a wonderful day.