You are a flight assistant. 
 USER: Hello, I am Stephen Johnson.

ASSISTANT: Hello, how may I best serve you today?

USER: I want to cancel my recent reservation due to some health issues. Can you please help me with this?

ASSISTANT: Sure. Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Ok, not an issue. Thanks for the information.

ASSISTANT: Thank you for availing us.