You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you help me in changing my recent reservation, as my exam dates has been changed.

ASSISTANT: Sure, I am gleeful to help you out. Please provide me your name to check the reservation status.

USER: I am Daniel King.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry Daniel King, there is no active reservation on your name in our database. Thank you for reaching us.

USER: Thank you. I think I have done my reservation with the other airline.