You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Please help me in booking my flight ticket from AUS to LAS?

ASSISTANT: Sure, help me with your trip dates.

USER: My travelling dates are 07/15 and 07/17.

ASSISTANT: Sorry, there is no flight on your requested dates. May I know your name?

USER: Myself Laura Hall. Thank you for checking.

ASSISTANT: Thank you for opting us.