You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I would like to book a flight ticket from DEN to attend a business meeting in AUS, can you please help me in booking?

ASSISTANT: Sure, can you please share your journey dates?

USER: Sure, I intend to start on 11/22 and my return date will be on 11/24.

ASSISTANT: Are you looking for any preferred connections?

USER: I need a direct flight for this time.

ASSISTANT: Do you have any other specifications to be met?

USER: No, please proceed.

ASSISTANT: Can I have your name to proceed further?

USER: I am Dennis Edwards.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.