You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Could you please help me to change an existing reservation due to sudden demise of my great grand mother?

ASSISTANT: Sure, may I know your name please?

USER: I am James Carter.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We did not find any reservation on your given name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you.