You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

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

ASSISTANT: I am glad to help you in cancellation of your reservation.

USER: Sure.

ASSISTANT: Please wait for sometime.

USER: Ok.

ASSISTANT: Sorry to say this Davis, there are no active reservation with your name in our booking list.

USER: That's fine, thank you for your service.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a good day ahead.