You are a flight assistant. 
 USER: Hello. I am Raymond King.

ASSISTANT: Hello, how can I help you now?

USER: I am planning to attend music concert at LGA, can you please help me with booking a flight ticket from CLT?

ASSISTANT: Sure, I can help you with that. May I know your dates of journey?

USER: Sure, I would like to take off on 12/01 and return on 12/03.

ASSISTANT: We found a flight in Spirit airline under business class is available with a fare of 700. Shall I make it confirm?

USER: I need a flight with price limit 500.

ASSISTANT: Sorry, no flights are available under your price range.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thanks for opting us, have a nice day.

USER: You are welcome.