You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Kenneth Phillips.

ASSISTANT: How can I serve you today?

USER: I planned a trip to Dallas, TX-DFW to visit a Money museum at Federal Reserve Bank Dallas. Can you help me in booking my flight ticket?

ASSISTANT: Sure, May I know your journey days?

USER: I would like to start my journey from 12/26 and return on 12/28. I will fly from NY-JKF.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there are no flights available by the given details.

USER: Ok, no problem. Thanks for the service.

ASSISTANT: Thank you for approaching us.