You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: My name is Charles Miller, I want to cancel my reservation due to my bad health. Can you help me with that?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Thank you for the information.

ASSISTANT: Thank you.