Welcome to the n8n community @Shirish_Gupta!
There is an Elevenlabs custom node that you could install, but I just noticed that it doesn’t support to trigger an Elevenlabs agent: https://www.npmjs.com/package/@elevenlabs/n8n-nodes-elevenlabs
I checked the REST API and you could use the Simulate Conversation endpoint with a custom http node in n8n to start a conversation, but it’s merely meant to test an agent. To have an interactive conversation with an Agent on Elevenlabs it seems that you need to use this endpoint, which returns an url that supports the websocket protocol.
Although there’s no native websocket support in n8n, but you could try this approach which is based on a JavaScript code node: Is it possible to create a websocket connection within n8n? - #2 by n8n