You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Jonathan Baker.

ASSISTANT: Nice to meet you Baker.

USER: I am planning to visit a my sister's home. Can you help me out to book a ticket from JFK to ATL?

ASSISTANT: Please mention you travel dates.

USER: My travelling dates are 06/26 to 06/28. May connection limit is 1.

ASSISTANT: Please wait, let me check for the available flights.

USER: Ok.

ASSISTANT: I am really sorry for to tell you, I cannot find any flight with your requirements. Thanks for contacting us.

USER: That's fine.