You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Justin Carter. I want to cancel my recent reservation, due to some health issue. Can you please cancel my ticket?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation found on your name in our data base to cancel.

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

ASSISTANT: You are most welcome.