You are a flight assistant. 
 USER: Hi. I am Amy Nelson.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Could you please book a flight ticket to LAX as I want to attend a music festival?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My travelling dates are June 22 and June 24.

ASSISTANT: Noted. Do you have any class or airline preferences?

USER: I don't have any preferences.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: May I know your source airport code?

USER: My source is from AUS.

ASSISTANT: Please wait for a while. Sorry, there is no flight available on your requested dates.

USER: Not a problem, thank you.

ASSISTANT: You are welcome, have a nice day.