You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Can you help me to book a business class flight ticket?

ASSISTANT: Sure, we are glad to help you. I need your travelling dates to book the flight.

USER: My preferable journey dates are Sept 27 and Sept 29.

ASSISTANT: May I know your respective airport codes please?

USER: My airport codes are SEA and DCA.

ASSISTANT: Do you have any connection limit for this trip?

USER: Yes, my connection limit is 1.

ASSISTANT: Please help me with your good name.

USER: My name is Brandon Wright.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Thanks for providing details, no flights are available on your journey dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.