You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Stephanie Carter. I want to book a flight ticket from LAS to AUS to meet my uncle, can you help me with booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are Sep 09 and Sept 11.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.