You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Brandon Williams. Would it be possible to cancel my recent reservation?

ASSISTANT: Sure, I am here to help you. Please wait for a mean while.

USER: Sure, take your time.

ASSISTANT: Sorry Williams, there is no reservation found as per your name to cancel your reservation.

USER: It's ok, no issues. Thanks for your information.

ASSISTANT: You are welcome always.