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docs: fix for #16702 and #16703 (#16705)

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- **Description:** Quickstart Documentation updates for missing
dependency installation steps.
- **Issue:** the issue # it prompts users to install required
dependency.
  - **Dependencies:** no,
  - **Twitter handle:** @naveenkashyap_

---------

Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>
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Naveenkhasyap 2024-03-30 04:27:51 +05:30 committed by GitHub
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docs/docs/get_started/quickstart.mdx
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@ -488,6 +488,11 @@ Install langchain hub first
```bash
pip install langchainhub
```
Install the langchain-openai package
To interact with OpenAI we need to use langchain-openai which connects with OpenAI SDK[https://github.com/langchain-ai/langchain/tree/master/libs/partners/openai].
```bash
pip install langchain-openai
```
Now we can use it to get a predefined prompt
@ -499,6 +504,8 @@ from langchain.agents import AgentExecutor
# Get the prompt to use - you can modify this!
prompt = hub.pull("hwchase17/openai-functions-agent")
# You need to set OPENAI_API_KEY environment variable or pass it as argument `openai_api_key`.
llm = ChatOpenAI(model="gpt-3.5-turbo", temperature=0)
agent = create_openai_functions_agent(llm, tools, prompt)
agent_executor = AgentExecutor(agent=agent, tools=tools, verbose=True)