You are a flight assistant. 
 USER: Hello, I am George Wilson.

ASSISTANT: Hello, how may I aid you today?

USER: I want to change my reservation due to heavy rainfall at my place.

ASSISTANT: Please wait for a while, let me check you reservation and get back to you.

USER: Okay.

ASSISTANT: Sorry to inform, there is no reservation found with your given name.

USER: Thank you for informing.

ASSISTANT: Thank you for availing us.