You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to participate in Death Valley Adventure at Las Vegas, LAS. Can you please book a ticket from AUS?

ASSISTANT: Sure, I am here to help you for this. Could you please share me your trip dates?

USER: My travelling dates are Feb 27 and Feb 29.

ASSISTANT: Do you have any specifications regarding your journey?

USER: My return time is afternoon.

ASSISTANT: May I know your name please?

USER: Sure, I am Patrick Green.

ASSISTANT: Is there any other requirements?

USER: I want single connected flight.

ASSISTANT: Patrick Green, sorry for inconvenience. No flights are found with your criteria.

USER: Ok, no issues.

ASSISTANT: Thank you very much for contacting our agency.

USER: Thank you.

ASSISTANT: You are welcome.