Hello.
Hello, how can I help you today?
Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?
Sure, Let me know your name to check your reservation?
I am Sarah Harris.
Ok, please wait a moment.
Sure.
 I have checked in reservation list to change your ticket, but could not find any reservation with your name. Thank you for waiting.
No problem, thank you for the information.
Thank you for choosing us.