You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Due to some technical issues, my meeting place has been changed. Can you please help me with this?

ASSISTANT: Are you looking for changing or cancellation?

USER: I want to change my reservation.

ASSISTANT: Sure, we are here to help you to change it. Please share your name.

USER: Sure, I am Betty Lee.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

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

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for opting us.