You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of service are you exporting in my said?

USER: Due to sudden demise of my grandmother, I need to change my reservation.

ASSISTANT: Sure, may I know your name please?

USER: I am Charles Robinson.

ASSISTANT: Sorry, there is no active reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you so much for choosing us.