You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I just want to change my existing reservation, due to sudden demise of my grand father.

ASSISTANT: Ok.

USER: Can you help me?

ASSISTANT: Sure. May I know your name?

USER: Carolyn Anderson here.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: No problem, Thank you.

ASSISTANT: Thank you.