You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I need you to book a flight ticket from AUS to LAX.

ASSISTANT: Ok, may I know your travelling dates for this journey?

USER: September 7 and 9 are my planned travel dates.

ASSISTANT: May I know your name?

USER: Kathleen Phillips in my name.

ASSISTANT: Do you have any requirements?

USER: I don't have any other preferences.

ASSISTANT: Sorry to say, there are no flights available for your journey.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing our services.