You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want a flight from JFK to ORD, can you help me in this?

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

USER: My planned trip dates are from 05/29 till 05/31.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: Ok.

ASSISTANT: May I know your name please?

USER: Myself Timothy Mitchell.

ASSISTANT: Sorry Timothy, there are no flights on your requested dates.

USER: That's ok, no issue.

ASSISTANT: Thank you for choosing us.