You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I want to book my flight ticket to Oakland, CA - OAK.

ASSISTANT: May I know your origin airport code?

USER: My origin report from Charlotte, NC - CLT, my travelling dates are from 12/22 to 12/24.

ASSISTANT: I have found a flight based on your details. But it is with 1 connection with a price of 300 only. Is it OK for you?

USER: No, I want my price limit 200. Thank you, for providing information.

ASSISTANT: Sorry, unfortunately there is no flight for 200.

USER: OK.

ASSISTANT: Could you please provide your name for formalities?

USER: Sure, My name is Paul Robinson.

ASSISTANT: Thank you for contacting us, have a good day.