[BUG] Wrong role type added to messages array for AgentAction

[shankinson]

Description

When the answer is an AgentAction, the message being appended to the messages array is set with role user. Since an AgentAction is a response from the AI/LLM, it should have the assistant role.

Steps to Reproduce

1. Allow an agent to run a tool
2. Inspect the messages sent to the LLM
3. Notice the Thought: xxx, Action: xxx, Action Input: xxx, Observation: xxx message is a user message instead of an assistant message.

Expected behavior

The AgentAction should be added to the messages list as an assistant message instead of a user message.

Screenshots/Code snippets

The third message should be tagged as assistant since it is the LLM thinking and choosing the tool to use.

Operating System

macOS Sonoma

Python Version

3.10

crewAI Version

0.67.1

crewAI Tools Version

0.12.1

Virtual Environment

Conda

Evidence

The third message should be role `assistant`

Possible Solution

Change user to assistant on line 154 of crew_agent_executor.py. I will be opening a PR for this.

Additional context

N/A