You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, I am here to help you. May I know your name to check with existing reservation?

USER: I am Michelle Allen.

ASSISTANT: I found your reservation on your name and I have been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.