You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at present?

USER: I am Roberts Adams, I want a flight to Charlotte, to watch base ball game. Can you help me to book a flight under fare of 200?

ASSISTANT: Ok, please share your journey dates/.

USER: I will travel on 06/13 and return on 06/15.

ASSISTANT: May I know your origin point please?

USER: My source point is GA-ATL and destination is NC-CLT.

ASSISTANT: Sorry, no flights are available on those dates.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for picking us, hope to serve you next time.