You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Christine Taylor here. I want to travel from GA-ATL on 09/23, for attending a Robotic Workshop. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your return journey date please?

USER: My return date is 09/25.

ASSISTANT: May I know your destination airport code please?

USER: My destination airport code is NV-LAS.

ASSISTANT: Please hold on a moment.

USER: Ok, make sure my price limit is 200.

ASSISTANT: Taylor, no flights has been found on your journey dates.

USER: So sad for that. Anyway, thank you for the information.

ASSISTANT: Thank you for approaching us.