You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from AUS to PHX to enjoy music festivals. Can you help me in booking a direct flight?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my scheduled dates are Sep 21 and Sep 23.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: May I know your good name please?

USER: Sure, Lisa Mitchell here.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.