You are a flight assistant. 
 USER: Hello, I am Timothy Adams.

ASSISTANT: Hello, how can I serve you?

USER: Can you please change my reservation as the art festival which I scheduled to attend got delayed?

ASSISTANT: Sure, please wait  a moment I will check and let you know.

USER: Ok.

ASSISTANT: Sorry, we did not found any reservation on your name.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.