Update use-function-calling.mdx

Add response display to tool call and update step descriptions

Author: fpagny

pages/generative-apis/how-to/use-function-calling.mdx

@@ -110,7 +110,7 @@ tools = [{
 
 ### Simple function call example
 
-Here is how to implement a basic function call:
+To implement a basic function call, add the following code:
 
 ```python
 # Initialize the OpenAI client
@@ -138,6 +138,13 @@ response = client.chat.completions.create(
     tools=tools,
     tool_choice="auto"
 )
+
+print(response.choices[0].message.tool_calls)
+```
+
+As the model detects properly that a tool call is required to answer the question, the output should be a list of tool calls specifying function names and parameters properties:
+```bash
+[ChatCompletionMessageToolCall(id='chatcmpl-tool-81e63f4f496d429ba9ec6efcff6a86e1', function=Function(arguments='{"departure_airport": "CDG", "destination_airport": "LHR", "departure_date": "2024-11-01"}', name='get_flight_schedule'), type='function')]
 ```
 
 <Message type="note">
@@ -148,9 +155,9 @@ response = client.chat.completions.create(
     Some models must be told they can use external functions in the system prompt. If you do not provide a system prompt when using tools, Scaleway will automatically add one that works best for that specific model.
 </Message>
 
-### Multi-turn conversation handling
+### Call tool and provide final answer
 
-For more complex interactions, you will need to handle multiple turns of conversation:
+To provide the answer, or for more complex interactions, you will need to handle multiple turns of conversation:
 
 ```python
 # Process the tool call
@@ -329,4 +336,4 @@ Function calling significantly extends the capabilities of language models by al
 
 <Message type="note">
   We can't wait to see what you will build with function calls. Tell us what you are up to, share your experiments on Scaleway's [Slack community](https://slack.scaleway.com/) #ai 
-</Message>
+</Message>