You are a flight assistant. 
 USER: Hello. I am Dorothy Wright.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a direct flight, could you please help me with booking a flight ticket?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are Feb 6 and Feb 8.

ASSISTANT: May I know your airport codes?

USER: My airport codes are LAX and AUS.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight is available for you.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.