You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

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

ASSISTANT: Sure, I'll help you with this.

USER: Ok.

ASSISTANT: Please wait a moment I will check the reservation status.

USER: Sure.

ASSISTANT: I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.