> For the complete documentation index, see [llms.txt](https://docs.flowiseai.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flowiseai.com/integrations/llamaindex/engine/simple-chat-engine.md).

# Simple Chat Engine

A simple chat engine functions as a complete pipeline for engaging in a dialogue between AI and user, without context retrieval. However it does equipped with [Memory](/integrations/langchain/memory.md), allowing to remember conversations.

<figure><img src="https://823733684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F00tYLwhz5RyR7fJEhrWy%2Fuploads%2Fgit-blob-f7164c7586611e113f1596695b4532a34bcf4a2d%2Fimage%20(2)%20(1)%20(1)%20(1)%20(1)%20(1)%20(1)%20(1)%20(2).png?alt=media" alt=""><figcaption></figcaption></figure>

## Inputs

* Chat Model
* [Memory](/integrations/langchain/memory.md)

## Parameters

| Name           | Description                                   |
| -------------- | --------------------------------------------- |
| System Message | An instruction for LLM on how to answer query |

## Outputs

| Name             | Description                   |
| ---------------- | ----------------------------- |
| SimpleChatEngine | Final node to return response |