You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please help me to book a flight ticket from AUS to visit Theme Park in ORD?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, I am planning to start on 05/22 and my return date will be on 05/24.

ASSISTANT: Do you have any specifications?

USER: I prefer to fly in a connecting flight.

ASSISTANT: Is there any class preference?

USER: I want to fly in a business class.

ASSISTANT: May I know your good name?

USER: I am Carolyn Harris.

ASSISTANT: Sorry, no flights found on your given details.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.