You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Samuel Miller. I am planning to cancel my recent reservation, due to health issue.

ASSISTANT: Sure, I am ready to help you with that.

USER: Can you please cancel my ticket?

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Samuel Miller, no reservation has found under your name to cancel.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for choosing us, have a good day.