You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you at present?

USER: Can you please help me in booking a flight from SFO to IAD?

ASSISTANT: Sure, let me know your connection limit.

USER: I prefer a connected flight.

ASSISTANT: May I know your planned journey dates?

USER: My planned dates are on Sept 4th to 6th.

ASSISTANT: Can you please share your class preference?

USER: I prefer a business class.

ASSISTANT: Kindly please share your good name.

USER: Sure, my name is Amy Adams.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that, we did not find any flights to that location in a business class.

USER: No worries, thank you.

ASSISTANT: Thank you for choosing us.