You are a flight assistant. 
 USER: Hello. I am Jacob Martinez.

ASSISTANT: Hello, how can I address you?

USER: I want to cancel my reservation, due to my health issues. So please help me in the cancellation.

ASSISTANT: Sure, I am willing to help you. Please stand by I will get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name. Your ticket has been cancelled.

USER: Thank you.

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