[Bug] Error Feedback Format Issue in AIOS Bot Responses

[XiangZhang-zx]

Checked other resources

• I added a very descriptive title to this issue.
• I am sure the issue hasn't been already addressed by searching through https://github.com/agiresearch/AIOS/issues.
• The usage issue is not resolved by updating to the latest stable version in the main branch.

Describe your current environment

OS: macOS
Python version: 3.10.15

Describe the bug

Description:
When an error occurs in the AIOS bot, the feedback is returned in JSON format, which is not user-friendly. Instead of displaying an understandable message, the response appears like this:
{"action_type": "message_llm", "action": "Please provide your preferences for cocktails or mocktails, including any available ingredients and dietary restrictions.", "tool_use": []}
This format may confuse users and impact the usability of the bot.
Steps to Reproduce:
Trigger an error in the AIOS bot (e.g., by providing unexpected input or omitting required information).
Observe the response format.
Expected Behavior:
The error message should be presented in clear, user-friendly language rather than JSON format. For example:
"Please provide your preferences for cocktails or mocktails, including any available ingredients and dietary restrictions."
Screenshots:
Attached is the screenshot showing the current JSON error feedback.