You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I am here to help you. May I know your good name please?

USER: I am Jeffrey Hernandez.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Thank you.

ASSISTANT: Thank you for choosing us.