Hello,.
user
Hello, how may I aid you?
assistant
I want to change my existing reservation which is with the name Thomas Carter, please help me out.
user
Sure, I am here to help you. Please stand by.
assistant
Ok.
user
Thank you, sorry no reservation found with your name.
assistant
No problem, thank you for the information.
user
Thank you for reaching us, have a nice day.
assistant