Hello.
user
Hello. How may I help you?
assistant
I want to change my existing reservation, due to some work at my office. Can you please change my existing reservation?
user
I am here to help you, may I know your name to check your reservation?
assistant
Sure, I am Joshua Lopez.
user
Ok, please wait.
assistant
Ok.
user
Sorry, there is no reservation found on your name.
assistant
Ok, Thank you for your help.
user
Welcome Joshua Lopez.
assistant