Hello.
 Hello, how can I render you today?
I want to change my reservation due to some personal work, so please help me to change.
Sure, I will help you with that.
Thank you.
Let me know your name to check your reservation?
Sure, I am Christine Thompson.
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 issues, thank you.
Thank you for choosing us.