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

ASSISTANT: Hello, How can I assist you?

USER: I need to cancel my reservation due to my health problem. Can you please cancel my reservation?

ASSISTANT: Sure, I will help you with it. Ok, wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. We did not find any recent reservation against your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us. Have a great day.