You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Raymond Anderson here. My wedding venue has been changed, so I want to amend my reservation.

ASSISTANT: Sure, please hold on a moment.

USER: Ok.

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

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.