You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Due to sudden health issue, I would like to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, may I know your name for the cancellation purpose?

USER: Ok, I have reserved it on the name of Anna King.

ASSISTANT: Your reservation found. Are you sure for this cancellation?

USER: Yes, go ahead.

ASSISTANT: Your cancellation done with our end.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for reaching us.