You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, I am blissful to help you. May I know your good name to proceed further?

USER: My name is Gregory Walker.

ASSISTANT: Please be on hold. Sorry, there is no reservation found on your name.

USER: Thanks.

ASSISTANT: Thank you for choosing us.