You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, may I know your name please?

USER: My name is William Carter.

ASSISTANT: Wait a while, kindly.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found for the user name in our back end to cancel it.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.