You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: I want to book a connecting flight ticket to attend an event from IL. Can you help me?

ASSISTANT: Sure, may I know your travel dates?

USER: 09/21 and 09/23 are my travelling dates.

ASSISTANT: Can you share your airport codes?

USER: ORD and AUS are my airport codes.

ASSISTANT: Is there any airline preference?

USER: No, But I would like to travel in an economy class.

ASSISTANT: Any other requirement to be met?

USER: No.

ASSISTANT: Please mention your name to proceed further?

USER: Sarah Collins.

ASSISTANT: United Airlines has a connecting flight with number 1022 for fare 200, shall I proceed?

USER: You can reserve it for me.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you for your help in booking the flight ticket.

ASSISTANT: Thank you for choosing us and have a safe flight.