Change agent to react agent

basic_agent.py

@@ -4,7 +4,7 @@ from llama_index.tools.duckduckgo import DuckDuckGoSearchToolSpec
 from llama_index.tools.wikipedia import WikipediaToolSpec
 from langfuse.llama_index import LlamaIndexInstrumentor
 from llama_index.llms.ollama import Ollama
-from llama_index.core.agent.workflow import FunctionAgent
+from llama_index.core.agent.workflow import FunctionAgent, ReActAgent
 
 from multimodality_tools import get_image_qa_tool, get_transcription_tool, \
     get_excel_analysis_tool, get_excel_tool, get_csv_analysis_tool, get_csv_tool
@@ -36,7 +36,7 @@ class BasicAgent:
         # TODO this does not work so well. We need to make the retriever return the top 5 chunks or sth.
         # wiki_search_tool_las = LoadAndSearchToolSpec.from_defaults(wiki_search_tool).to_tool_list()
 
-        self.agent = FunctionAgent(
+        self.agent = ReActAgent(
             tools=[search_tool, wiki_search_tool, get_image_qa_tool(),
                    get_transcription_tool(), get_excel_analysis_tool(), get_excel_tool(),
                    get_csv_analysis_tool(), get_csv_tool()],