You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Nancy Edwards. I want to cancel  my reservation, due to health problem.

ASSISTANT: Wait a moment please, let me check the database with your name.

USER: Ok.

ASSISTANT: Nancy Edwards, there is no reservation found with your name in our database,.

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

ASSISTANT: Thank you for contacting us.

USER: Welcome.