You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I am Ronald Harris. I want to visit white house at Washington, DCA. Can you please book a ticket from Charlotte, CLT?

ASSISTANT: Sure. May I know, how much can you afford for this journey?

USER: Price limit should be under 200.

ASSISTANT: What are your journey dates?

USER: I want to start from 01/08 and return on 01/10.

ASSISTANT: UA airline flight with single connection and price 100 is available having 1004 number. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket was confirmed.

USER: Thank you.

ASSISTANT: Thank you.