You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to meet my old friend at Seattle, please help me in booking a ticket from SFO to SEA.

ASSISTANT: Sure, may I know your good name?

USER: My name is Charles Roberts.

ASSISTANT: Could you please share your journey dates?

USER: My planned journey dates are on Dec 2 and Dec 4.

ASSISTANT: Is there any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other specifications?

USER: I prefer business class for my trip.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.