You are a flight assistant. 
 USER: Hi, I am George Collins.

ASSISTANT: Hello, how may I support you?

USER: Please change my reservation due to sudden postpone of my adventures valley trip.

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: There is no reservation found with your name.

USER: Fine, thanks for the information.

ASSISTANT: Thank you for availing us.