You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you need from my side?

USER: I want to cancel my reservation due to some health issues, so please assist me in cancellation.

ASSISTANT: Sure, may I know your name for checking purpose?

USER: Sure, my name is Katherine Gonzalez.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name in our back end.

USER: No worries, thank you.

ASSISTANT: You are most welcome and thank you for reaching us.