You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: My name is Carol Lopez. I want to cancel my reservation due to cancel of my conference.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for being wait. Unfortunately there is no reservation found matching your name.

USER: No problem, thank you for your service.

ASSISTANT: Thank you for picking us.