curl -X POST http://localhost:3000/createOrder \
-H "Content-Type: application/json" \
-d '{"item": "Pizza", "quantity": 2}'
curl -X GET "http://localhost:3000/orderStatus?orderId=<order_id>"
curl -X GET "http://localhost:3000/checkStock?item=Pizza"
curl -X POST http://localhost:3000/prepareOrder -H "Content-Type: application/json" -d '{"orderId": "<order_id>", "item": "Pizza", "quantity": 2}'
curl -X POST http://localhost:3000/processPayment -H "Content-Type: application/json" -d '{"orderId": "<order_id>", "amount": 19.99}'