customers.txt

"customers": [{
            "id": 1,
            "firstName": "Rachel",
            "lastName": "Green "
        },
        {
            "id": 2,
            "firstName": "Chandler",
            "lastName": "Bing"
        },
        {
            "id": 3,
            "firstName": "Joey",
            "lastName": "Tribbiani"
        },
        {
            "id": 4,
            "firstName": "Monica",
            "lastName": "Geller"
        },
        {
            "id": 5,
            "firstName": "Ross",
            "lastName": "Geller"
        },
        {
            "id": 6,
            "firstName": "Phoebe",
            "lastName": "Buffay"
        }
        ]