You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I help you?

USER: Due to high fever, I would like to cancel my reservation. Can you help me out?

ASSISTANT: May I know your name?

USER: Sure, my name is Dennis Edwards.

ASSISTANT: I regret, there is no reservation by name Dennis Edwards.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks.