Hello, I am Daniel Nelson.
Hello, how can I help you today?
Due to an emergency issue, I want to change my existing reservation. Can you help me out?
Sure, we are here to help you. Please wait a moment I will the reservation status and get back to you.
OK.
Sorry to inform you that no reservation were found on your given name.
Thanks for the information.
Thank you for reaching us. Have a nice day.