Hello.
user
Hello.
assistant
My name is Gregory Walker.
user
How may I aid you today?
assistant
I am planning to do some changes in my existing reservation, can you help me for that?
user
Sure, I am here to help you.
assistant
Thank you.
user
Sorry, no reservation found on your name.
assistant
That's ok, thank you for checking.
user
Welcome, have a nice day.
assistant