Hi.
user
Hello, how can I serve you today?
assistant
I want to change my existing reservation which is done recently due to some problems, can you please help me?
user
Sure, we are here to help you. Can I know your name please?
assistant
Thank you. Sure, my name is Kevin Miller.
user
Sorry to inform you that there is no active reservation on your given name.
assistant
Ok, no problem. Thank you for your service.
user
Thanks for reaching us, have a nice day.
assistant