You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I have planned to book a flight from SFO, so please help me in booking a flight.

ASSISTANT: Sure, please share your trip dates.

USER: My planned dates are on Jan 22nd to 24th.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need it.

ASSISTANT: Can I know your destination code?

USER: My destination airport code is AUS.

ASSISTANT: May I know your timings?

USER: I don't have any preferences.

ASSISTANT: Can I know your good name?

USER: Sure, my name is Jonathan Walker.

ASSISTANT: There is a connecting flight in economy class with Hawaiian airline and ticket fare of 200. Shall I proceed?

USER: I prefer a business class to travel, so please check for it.

ASSISTANT: Sorry, no flights are available with your requirements.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.