You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please help me in booking flight ticket from SEA to AUS.

ASSISTANT: Sure, when do you want to travel?

USER: My trip dates are July 05 to July 07.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, please provide your connection limit.

USER: I need a direct flight.

ASSISTANT: Ok, Do you have any other preferences?

USER: No.

ASSISTANT: Thank you for providing details, No flights were found with your given details.

USER: Ok, no problem.

ASSISTANT: Ok, please mention your name for documentation purpose.

USER: Myself Brian Hall.

ASSISTANT: Thank you for opting us.

USER: Thank you.

ASSISTANT: Have a nice day.