Hello, I am Alexander Lopez.
Hello, how can I render you today?
Due to some emergency I need to change my existing reservation can you help me out?
Sure, I will help you with that.
Thank you.
Please wait a moment.
Sure.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
No problem. Thank you for the information.
Thank you for choosing us.