customer_id,name,email,join_date
1,Alice Johnson,alice@example.com,2023-01-15
2,Bob Smith,bob@example.com,2023-02-20
3,Charlie Brown,charlie@example.com,2023-03-10
4,Diana Prince,diana@example.com,2023-04-05
5,Eve Wilson,eve@example.com,2023-05-12