You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, can I know your good name please?

USER: Timothy Lee.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Thank you.

ASSISTANT: Thank you for opting us.