Hi.
user
Hello, how may I oblige you today?
assistant
I want to change my reservation, please help me with it.
user
Can I have your name please?
assistant
I am Pamela Lewis.
user
Please give me a moment, I will check your reservation and back to you. Unfortunately, no reservation found on your given name.
assistant
Ok. Fine, thanks for the information.
user
Thank you for availing us.
assistant