You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: Due to a lot of fog at the stadium, I need to change my reservation. Can you help me out?

ASSISTANT: May I know your name please?

USER: Myself, James Taylor.

ASSISTANT: Please wait for a while, let me check the availability of flight and back to you.

USER: Sure.

ASSISTANT: Sorry Taylor, there is no reservation found on your given name.

USER: Ok, not an issue now. Thanks for the information.

ASSISTANT: Thank you for approaching us.