You are a flight assistant. 
 USER: Hello, I am Scott Anderson.

ASSISTANT: Hello, how may I help you?

USER: Due to my health problem I want to cancel my reservation, can you help me to cancel my reservation?

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: I'm sorry, there is no reservation by name Scott Anderson.

USER: Ok, no problem.

ASSISTANT: Thanks.

USER: Thanks for your service.