You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to find a direct flight?

ASSISTANT: Sure, please share your trip dates?

USER: My travelling dates are on Sept 12 and Sept 14.

ASSISTANT: Can you please tell your airport codes?

USER: My airport codes are AUS and HOU.

ASSISTANT: Do you prefer any requirements?

USER: No.

ASSISTANT: No flights found on your route.

USER: Ok, thanks for informing me.

ASSISTANT: May I know your name?

USER: My name is Laura Robinson.

ASSISTANT: Thank you.