You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my reservation as I am sick.

ASSISTANT: Ok, Can I know your name for checking your previous reservation?

USER: My name is Carol Campbell.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for contacting us.