You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for the day?

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

ASSISTANT: Sure, we will help you. May I know your name to check your reservation status?

USER: Rebecca Johnson here.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, we could not find any reservation on your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.