You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Kenneth Phillips, Can you please help me to book a flight ticket from LAX - AUS?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are 03/19 to 03/21.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.