Hello.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation, can you please help me with that?
user
Sure, Let me know your name to check your reservation?
assistant
My name is Karen White.
user
Ok, please wait a moment.
assistant
Sure.
user
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Not an issue, thank you.
user
Thank you for choosing us.
assistant