Hello.
user
Hello, how can I assist you?
assistant
My name is Thomas Perez. Would you mind helping me in changing my existing reservation details?
user
Sure, I will help you. Please wait for a while.
assistant
Ok, I will wait for your response.
user
Sorry to inform you that there is no reservation found on your name to change.
assistant
It's ok, not an issue.
user
Thank you for approaching us.
assistant
Thank you for your service.
user