You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

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. Please wait for a moment.

USER: Ok.

ASSISTANT: May I know your name?

USER: My name is Samuel White.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: Anyway, thanks for the information.

ASSISTANT: You are welcome, have a nice day.