You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Katherine Hernandez, I want to cancel my recent reservation due to health issues.

ASSISTANT: Ok, please wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.