Hello.
user
Hello, how can I help you today?
assistant
I would like to change my existing reservation, can you help me in that?
user
Sure, Let me know your name to check your reservation?
assistant
Sure, myself Margaret Hall.
user
Ok, please wait a moment.
assistant
Sure, I will wait for your response.
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
That's ok, no problem. Thank you for the information.
user
Thank you for choosing us.
assistant