You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Richard Collins.

ASSISTANT: How may I help you?

USER: Can you find a flight from AUS to LAX, for attending a birthday party.

ASSISTANT: May I know your dates of travel?

USER: Sure, my travel dates are 05/27 and 05/29.

ASSISTANT: Sorry, there is no flight found basis on your details.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for opting us.