You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please cancel my reservation due to my bad health?

ASSISTANT: Sure, can I know your name?

USER: I am Jack Lee.

ASSISTANT: Please hold on a moment. Sorry, there is no reservation found on given name.

USER: Sure. That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.