You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Justin Scott. I am planning to cancel my recent reservation, due to health issue.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Can you please cancel my ticket?

ASSISTANT: There is no reservation on your name.

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

ASSISTANT: Thank you for opting us.