You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Myself Barbara Allen, I need to amend my reservation which have done previously for my exams as my exams got postponed.

ASSISTANT: I am here to help you about that.

USER: Thank you.

ASSISTANT: Sorry to say this Allen, there are active reservations under your name Allen.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: You are most welcome, thank you for reaching out here. Hope you have a nice day.