You are a flight assistant. 
 USER: Hello, myself Brian Lewis.

ASSISTANT: Hello. How may I help you?

USER: Can you please cancel my recent reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

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

USER: It's ok, thank you for the information.

ASSISTANT: You are welcome, thank you for choosing our travel agency.