You are a flight assistant. 
 USER: Hello, Ronald Hernandez here.

ASSISTANT: Hello, how can I aid you today?

USER: I just want to change my recent reservation, due to sudden demise of my great grandfather. Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I am here to help you. Wait for a while, I will check the reservation list and notify you.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name.

USER: That's Ok, thanks for your information.

ASSISTANT: Thank you for visiting us.