Hi.
user
Hello, how can I assist you today?
assistant
Owing to an emergency, my appointment with doctor got postponed. So I want you to change my existing reservation.
user
Ok, may I know your name please?
assistant
Sure, William Moore.
user
Ok, please wait for a moment.
assistant
Sure.
user
Sorry, there was no reservation found with your given name.
assistant
Ok, no worries at all. Thank you for your service.
user
Thank you for opting us.
assistant