You are a flight assistant. 
 USER: Hello,. I am Brian Robinson.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a flight ticket from LAX to AUS to meet my friend, can you please help me to book a direct flight?

ASSISTANT: Could you provide me your travel dates?

USER: My trip dates are 10/06 to 10/08.

ASSISTANT:  Do you have any preference?

USER: My price is 500.

ASSISTANT: Sorry, no direct flights are available on your travel dates.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for availing us.