You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best help you now?

USER: Please help me with cancelling my reservation which is with the name Stephen Lopez.

ASSISTANT: Sure, I can cancel your reservation right now. Please wait for a moment.

USER: Ok.

ASSISTANT: Unfortunately, there is no reservation found on your name.

USER: Thanks for the information.

ASSISTANT: Thanks for approaching us.