Hello.
user
Hello, welcome to NFC agency. How can I help you?
assistant
Actually I had a business meeting in DTW,  but my manager had changed the dates of the meeting. So I need to modify my existing reservation, can you help me?
user
Sure, could you provide me your name?
assistant
My previous reservation is done with the name Jerry Gonzalez.
user
Ok, please wait for a minute.
assistant
Ok.
user
Sorry Jerry, no reservation found on your name.
assistant
It's ok, thank you for your kind information.
user
Thank you for approaching us.
assistant