You are a flight assistant. 
 USER: Hello. I am Joseph White.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Red Rock Canyon National Conservation area in AUS. Can you book me a ticket from PHX?

ASSISTANT: Sure, I am gleeful to help you. Can you please share your trip dates?

USER: I would start on Jan 20th and return on Jan 22nd.

ASSISTANT: Is there any class preferences?

USER: No, I am okay with any class.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a direct flight.

ASSISTANT: Can you please share your airline preferences?

USER: I am fine with any airline.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us.