You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Brian Smith. I want to cancel my reservation which was booked to Houston, can you please help me?

ASSISTANT: Sure, I am gleeful to help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: Ok, thanks for informing me.

ASSISTANT: Thank you for reaching us.