You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Due to emergency health issue, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, I am here to help you, may I know your name?

USER: I am George Nelson.

ASSISTANT: Sorry, no reservation done on name of George Nelson.

USER: That's not a problem. Thanks for your response.

ASSISTANT: Thank you for approaching us.