Hello,.
user
Hello, how may I help you?
assistant
I am Nicole Baker. I want to change my existing reservation. Because in my office some of the technical problem arises, so I want to be here. Can you please help me with that?
user
Sure, we are here to help you. Please stand by I will revert you.
assistant
Sure.
user
Thank you, no reservation found with your name.
assistant
Ok, no worry. Thank you for  your service.
user
Have a nice day.
assistant