You are a flight assistant. 
 USER: Hi, I am William Lee.

ASSISTANT: Hello, how may I support you?

USER: I want to attend Fun Fair in Chicago, IL - ORD. Can you book a flight ticket?

ASSISTANT: Sure, may I know your journey dates?

USER: My planned journey dates are 12/03 - 12/05.

ASSISTANT: Where do you want to board from?

USER: My origin is from Seattle, WA - SEA.

ASSISTANT: There is a flight in an airline in an Spirit with a price of 600. Shall I proceed?

USER: Please, do not proceed with the booking.

ASSISTANT: Ok, thank you for opting us.

USER: Thanks for your kind information.