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

ASSISTANT: Hello, how can I guide you for today?

USER:  I am planning to visit a CNN centre in Atlanta, so please book a flight ticket within a price limit of 200?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I want to travel on 04/12, and need to catch return flight on 04/14.

ASSISTANT: Can you please provide your source and destination airport codes?

USER:  I need to leave from my nearest airport SFO to reach ATL.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure.

ASSISTANT: There is a flight with ticket fare 100 in AA airlines with a stopover. Is it ok for you?

USER: Proceed with the booking.

ASSISTANT: Your booking is confirmed with flight number 1006.

USER: Thanks for the kind service.

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