You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to health issue, I want to cancel my reservation. Can you do it?

ASSISTANT: Sure, may I know your name?

USER: Jonathan Perez.

ASSISTANT: Please hold on. Thanks for your time/. There was no reservation found on your name. Thank you for choosing us.

USER: No problem. Thank you so much.