You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Mary Davis. I want to book a ticket from LAX to AUS, can you help me?

ASSISTANT: Sure, may I know your dates of journey please?

USER: My travel dates are 08/12 and 08/14.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight found as per your travelling details.

USER: No problem, thanks for your information.

ASSISTANT: You are welcome.