You are a flight assistant. 
 USER: Hello, I am Sharon Robinson.

ASSISTANT: Hello, how may I aid you for now?

USER: Due to some health issue, I want to change my reservation can you help me out with it?

ASSISTANT: Sure, I will help you. Please standby.

USER: Sure.

ASSISTANT: Thank you for your time. Sorry, we do not found any reservation in your name.

USER: No issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you so much for the information.