CREATE TABLE first_notification_of_loss (fnol_id DECIMAL, customer_id DECIMAL, policy_id DECIMAL, service_id DECIMAL)
CREATE TABLE available_policies (policy_id DECIMAL, policy_type_code TEXT, customer_phone TEXT)
CREATE TABLE settlements (settlement_id DECIMAL, claim_id DECIMAL, effective_date TIME, settlement_amount DECIMAL)
CREATE TABLE services (service_id DECIMAL, service_name TEXT)
CREATE TABLE claims (claim_id DECIMAL, fnol_id DECIMAL, effective_date TIME)
CREATE TABLE customers_policies (customer_id DECIMAL, policy_id DECIMAL, date_opened TIME, date_closed TIME)
CREATE TABLE customers (customer_id DECIMAL, customer_name TEXT)

Which customers do not have a first notification of loss record? Give me the customer names.
SELECT customer_name FROM customers EXCEPT SELECT t1.customer_name FROM customers AS t1 JOIN first_notification_of_loss AS t2 ON t1.customer_id = t2.customer_id
SELECT "customer_name" FROM "customers" EXCEPT SELECT "t1"."customer_name" FROM "customers" AS "t1" JOIN "first_notification_of_loss" AS "t2" ON "t1"."customer_id" = "t2"."customer_id"