Update English translations for tool usage and reasoning instructions

- Revised the `post_tool_reasoning` message to clarify the analysis process after tool usage, emphasizing the need to provide only the final answer if requirements are met.
- Updated the `format` message to simplify the instructions for deciding between using a tool or providing a final answer, enhancing clarity for users.
- These changes improve the overall user experience by providing clearer guidance on task execution and response formatting.

lib/crewai/src/crewai/translations/en.json

@@ -13,8 +13,8 @@
     "no_tools": "\nTo give my best complete final answer to the task respond using the exact following format:\n\nThought: I now can give a great answer\nFinal Answer: Your final answer must be the great and the most complete as possible, it must be outcome described.\n\nI MUST use these formats, my job depends on it!",
     "native_tools": "\nUse available tools to gather information and complete your task.",
     "native_task": "\nCurrent Task: {input}\n\nThis is VERY important to you, your job depends on it!",
-    "post_tool_reasoning": "PAUSE and THINK before responding.\n\nInternally consider (DO NOT output these steps):\n- What key insights did the tool provide?\n- Have I fulfilled ALL requirements from my original instructions (e.g., minimum tool calls, specific sources)?\n- Do I have enough information to fully answer the task?\n\nIF you have NOT met all requirements or need more information: Call another tool now.\n\nIF you have met all requirements and have sufficient information: Provide ONLY your final answer in the format specified by the task's expected output. Do NOT include reasoning steps, analysis sections, or meta-commentary. Just deliver the answer.",
-    "format": "I MUST either use a tool (use one at time) OR give my best final answer not both at the same time. When responding, I must use the following format:\n\n```\nThought: you should always think about what to do\nAction: the action to take, should be one of [{tool_names}]\nAction Input: the input to the action, dictionary enclosed in curly braces\nObservation: the result of the action\n```\nThis Thought/Action/Action Input/Result can repeat N times. Once I know the final answer, I must return the following format:\n\n```\nThought: I now can give a great answer\nFinal Answer: Your final answer must be the great and the most complete as possible, it must be outcome described\n\n```",
+    "post_tool_reasoning": "Analyze the tool result. If requirements are met, provide the Final Answer. Otherwise, call the next tool. Deliver only the answer without meta-commentary.",
+    "format": "Decide if you need a tool or can provide the final answer. Use one at a time.\nTo use a tool, use:\nThought: [reasoning]\nAction: [name from {tool_names}]\nAction Input: [JSON object]\n\nTo provide the final answer, use:\nThought: [reasoning]\nFinal Answer: [complete response]",
     "final_answer_format": "If you don't need to use any more tools, you must give your best complete final answer, make sure it satisfies the expected criteria, use the EXACT format below:\n\n```\nThought: I now can give a great answer\nFinal Answer: my best complete final answer to the task.\n\n```",
     "format_without_tools": "\nSorry, I didn't use the right format. I MUST either use a tool (among the available ones), OR give my best final answer.\nHere is the expected format I must follow:\n\n```\nQuestion: the input question you must answer\nThought: you should always think about what to do\nAction: the action to take, should be one of [{tool_names}]\nAction Input: the input to the action\nObservation: the result of the action\n```\n This Thought/Action/Action Input/Result process can repeat N times. Once I know the final answer, I must return the following format:\n\n```\nThought: I now can give a great answer\nFinal Answer: Your final answer must be the great and the most complete as possible, it must be outcome described\n\n```",
     "task_with_context": "{task}\n\nThis is the context you're working with:\n{context}",

lib/crewai/src/crewai/utilities/prompts.py

@@ -68,9 +68,7 @@ class Prompts(BaseModel):
         # When using ReAct pattern with tools, use tools instructions
         # When no tools are available, use no_tools instructions
         if self.has_tools:
-            if self.use_native_tool_calling:
-                slices.append("native_tools")
-            else:
+            if not self.use_native_tool_calling:
                 slices.append("tools")
         else:
             slices.append("no_tools")