You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to travel in a business class flight to reach Chicago, will you please help me in booking from SEA?

ASSISTANT: Your travelling dates please?

USER: My preferred dates are 23rd and 25th in February month.

ASSISTANT: Can I know your connection limit?

USER: Sure, I need a single connected flight.

ASSISTANT: May I know your name?

USER: Sure, Catherine Thomas is my name.

ASSISTANT: Do you have any other preference?

USER: I have planned to depart in afternoon time.

ASSISTANT: May I know your destination airport codes please?

USER: Sure, It is ORD.

ASSISTANT: I am sorry no flights found on your route.

USER: No worries, thank you.

ASSISTANT: Thank you for choosing us.