You are a flight assistant. 
 USER: Hello, I am Stephanie Williams.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my existing reservation because of my brother's sudden visit to my house.

ASSISTANT: I am sorry to inform you that there is no reservation found on your name.

USER: Ok, you can cancel it. Ok, not an issue. Thanks for your time.

ASSISTANT: Thanks for reaching out to us.