code: import os
  import langchain
  
  from langchain.utilities import SerpAPIWrapper
  from langchain.agents import initialize_agent, Tool
  from langchain.agents import AgentType
  from langchain.chat_models import ChatOpenAI
  
  os.environ['OPENAI_API_KEY'] = ""
  os.environ['SERPAPI_API_KEY'] = ""
  
  llm = ChatOpenAI(temperature=0, model="gpt-3.5-turbo-0613")
  
  search = SerpAPIWrapper()
  
  # Define a list of tools offered by the agent
  tools = [
      Tool(
          name="Search",
          func=search.run,
          description="Useful when you need to answer questions about current events. You should ask targeted questions.",
      ),
  ]
  
  mrkl = initialize_agent(
      tools, llm, agent=AgentType.OPENAI_MULTI_FUNCTIONS, verbose=True
  )
  
  langchain.debug = True
  
  result = mrkl.run("What is the weather in LA and SF?")
  print(result)
  
  # Configuring max iteration behavior
  mrkl = initialize_agent(
      tools,
      llm,
      agent=AgentType.OPENAI_FUNCTIONS,
      verbose=True,
      max_iterations=2,
      early_stopping_method="generate",
  )
  result = mrkl.run("What is the weather in NYC today, yesterday, and the day before?")
  print(result)
  
apis: langchain.utilities.SerpAPIWrapper langchain.agents.initialize_agent langchain.chat_models.ChatOpenAI langchain.agents.Tool
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