You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: My name is Patrick Allen, I want to cancel my reservation due to health issues.

ASSISTANT: Sure, we are glad to serve you.

USER: Ok.

ASSISTANT: Please hold a moment, let me check your reservation and let you know.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time, sorry, unfortunately no reservation found with your name.

USER: No problem, thank you for your service.

ASSISTANT: Thank you for picking us, have a pleasant day.