You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to my health problem, I need to cancel my recent reservation. Can you please cancel my reservation?

ASSISTANT: Sure, may I know your name please?

USER: Elizabeth Evans is my name.

ASSISTANT: Sorry Evans, unfortunately there is no reservation found under your name.

USER: Ok, no issue. Thanks for your information.