You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: Here Karen Hernandez. I want to cancel my reservation because my health is not good.

ASSISTANT: I am glad to help you in cancellation of your reservation.

USER: Thank you.

ASSISTANT: Sorry to say this Karen, there are no reservations under your name to cancel.

USER: That's good, thank you for information.

ASSISTANT: You are welcome, thank you for reaching out here.