You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best assist you?

USER: Brandon Miller here. I want to cancel my last reservation. Can you please help me out?

ASSISTANT: Sure, I would be happy to help you. Please wait for a while, I will check and revert you.

USER: OK.

ASSISTANT: Sorry there is no reservation found on your name.

USER: Its OK. Thank you for the information.

ASSISTANT: Thanks for reaching us and have a great day.