private Registration InsertRegistration(string[] requestItems)
        {
            Registration registration = new Registration();
            registration.KtpNumber = requestItems[1];
            registration.PhoneNumber = userPhoneNumber;
            registration.Address = requestItems[2];
            registration.IsVerified = true;
            string query = string.Format("INSERT INTO registrations(ktpnumber, phonenumber, address) VALUES('{0}','{1}','{2}')", registration.KtpNumber, registration.PhoneNumber, registration.Address);

            conn.Execute(query);
            return registration;
        }
        private User InsertUser(Registration registration)
        {
            User user = new User();
            user.KtpNumber = registration.KtpNumber;
            user.PhoneNumber = registration.PhoneNumber;
            user.Address = registration.Address;
            string query = string.Format("INSERT INTO users(ktpnumber, phonenumber, address) VALUES('{0}','{1}','{2}')", user.KtpNumber, user.PhoneNumber, user.Address);

            conn.Execute(query);
            return user;
        }