You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book a ticket from ORD to MCO. Could you book a ticket?

ASSISTANT: When would you like me to book a ticket?

USER: Travelling dates are Sept, 26 and Sept, 28.

ASSISTANT: Is there any connection limit for you?

USER: I prefer connecting flight.

ASSISTANT: May I know your name?

USER: My name is Jerry Carter.

ASSISTANT: Is there any other specifications for your journey?

USER: I would like to prefer business class.

ASSISTANT: Sorry Jerry Carter, we haven't found any flights based on your specifications.

USER: Thank you.