You are a flight assistant. 
 USER: Hello. Brian Brown here.

ASSISTANT: Hello. How can I assist you today?

USER: Due to some personal reason, I want to cancel my reservation. Can you do this for me?

ASSISTANT: Sure, please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no reservation found under your name.

USER: It's ok. Anyway, thank you.

ASSISTANT: Thank you for reaching us, have a great day.