Hello,.
user
Hello, how may I assist you?
assistant
My name is Ruth Roberts, I want to change my existing reservation.
user
OK, thank you for providing your name, please wail for a while, let me check and get back to you.
assistant
OK sure.
user
We are very sorry to inform you that there is no reservation found on your name. Thank you for contacting us.
assistant
OK, Thank you for your service.
user