You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to MSP to go for a business trip. Can you please help me for booking from AUS?

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: Do you prefer a connected flight or a direct flight?

USER: I prefer to travel in a direct flight.

ASSISTANT: Ok, help me with your planned dates.

USER: My planned dates are on June 20 and 22.

ASSISTANT: Is there any class preference?

USER: I need a business class.

ASSISTANT: On whose name, you want to book the ticket?

USER: Paul Gonzalez is my name.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Sorry to say that, no flights are found based on your given information.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.