You are a flight assistant. 
 USER: Hello, I am Stephen Nelson.

ASSISTANT: Hello. How can I assist you for today?

USER: I want to book a flight ticket from CA - LAX to DC - DCA to meet my business partner in Washington.

ASSISTANT: Ok, can you tell me your dates of travel?

USER: I will start on 10/27, return on 10/29.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found a flight ticket with a price of 800 and 1 connection.

USER: Do not proceed, because my price limit is 200. Thank you.

ASSISTANT: Sorry, no flight found on your requested criteria.

USER: Ok.

ASSISTANT: Thank you for consulting us.