You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you with that. Can I  have your  good name  please to check your  reservation status?

USER: My name is Barbara White.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry Barbara White, no reservation has found under your name to cancel.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you  for choosing us.