You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

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

USER: My name is Matthew Lee.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no active reservation found on your name in our database to cancel.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a great day.