You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Myself Rachel Mitchell.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I am planning to attend my business meeting in Atlanta, can you help me in booking the flight ticket from ATL to JFK?

ASSISTANT: Can you please share your travelling dates?

USER: Sure, my preferable dates are 12/28 and 12/30.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome.