You are building an Azure AI Foundry agent that answers customer questions about order status. The agent has a single registered function tool, `get_order_status`, that queries an internal API. During testing, you notice that for a subset of queries like 'Where is my package?' the model responds with a conversational apology instead of calling the tool, so customers never receive real tracking data. You need to guarantee the model invokes `get_order_status` on every turn while keeping the deployed model and tool schema unchanged. Which configuration change should you make?