You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna Lewis.

ASSISTANT: How can I help you today?

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

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

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

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

ASSISTANT: Thank you for reaching us, have a nice day.