You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: May I know your name please?

USER: Benjamin Campbell here.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.