You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what type of service you are expecting from our agency?

USER: I am Kevin Hill. I am planning to cancel my recent reservation, due to health issue. Can you please cancel my ticket?

ASSISTANT: Sure, I will try my best in cancellation of your reservation.

USER: Sure.

ASSISTANT: Sorry to say this Kevin, there are no active reservations under your name to cancel.

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

ASSISTANT: You are most welcome, thank you for availing our service.