Hello.
Hello, how can I help you today?
I would like to change my existing reservation due to change in my schedule. Could you please help me?
Sure, I will help you with that. Let me know your name to check your reservation?
I am Larry Hill.
Ok, 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 worries, thank you for the information.
Thank you for choosing us.