You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Karen Lee. Owing to an emergency, I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: We found a reservation with your name. And it has been cancelled.

USER: Thank you.

ASSISTANT: Thanks for reaching us.