Hello.
Hello, how can I help you today?
I would like to change my existing reservation, can you help me in that?
Sure, Let me know your name to check your reservation?
Sure, myself Margaret Hall.
Ok, please wait a moment.
Sure, I will wait for your response.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
That's ok, no problem. Thank you for the information.
Thank you for choosing us.