You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, I am glad to help you. May I know your name to proceed further?

USER: My name is Kevin Moore.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: There is no reservation found on your name in our database.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.