You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Katherine Adams, I am planning to visit my friend at New York, NY-JFK. Can you book a direct flight for me?

ASSISTANT: Sure, can you help me with your travel dates?

USER: I will fly on 02/29 and plan to return on 03/02.

ASSISTANT: Please specify your source code?

USER: I like to fly from Atlanta, GA-ATL.

ASSISTANT: Thanks for your details. We regret to inform you that, there is no flight found on your requested dates.

USER: Ok, thank you for the details.

ASSISTANT: Thank you for choosing us, hope to serve to better next time.