Hello, David Carter here.
user
Hello, David Carter. How can I help you for the day?
assistant
Due to an emergency meeting, I want to change my existing reservation.
user
OK.
assistant
Can you please help me out?
user
Sure, We can help you. We are very sorry to inform you that, There is no reservation found on David Carter.
assistant
Thanks for the information.
user
Thank you, For making an inquiry with us regarding change reservation. Have a nice day.
assistant