diff --git a/euclid/const/function_calls.py b/euclid/const/function_calls.py
new file mode 100644
index 0000000..bae8140
--- /dev/null
+++ b/euclid/const/function_calls.py
@@ -0,0 +1,33 @@
+from utils.llm import parse_llm_output
+
+def process_user_stories(stories):
+    return stories
+
+def return_array_from_prompt(values_in_list):
+    return {
+        'name': 'process_user_stories',
+        'description': f"Print the list of user stories that are created.",
+        'parameters': {
+            'type': 'object',
+            "properties": {
+                "stories": {
+                    "type": "array",
+                    "description": f"List of user stories that are created in a list.",
+                    "items": {
+                        "type": "string",
+                        "description": "User story"
+                    },
+                },
+            },
+            "required": ["stories"],
+        },
+    }
+
+USER_STORIES = {
+    'definitions': [
+        return_array_from_prompt('user stories')
+    ],
+    'functions': {
+        'process_user_stories': process_user_stories
+    },
+}
\ No newline at end of file
diff --git a/euclid/prompts/prompts.py b/euclid/prompts/prompts.py
index 31c4070..640f9c8 100644
--- a/euclid/prompts/prompts.py
+++ b/euclid/prompts/prompts.py
@@ -158,7 +158,7 @@ def generate_messages_from_custom_conversation(role, messages, start_role='user'
     return result
 
 
-def execute_chat_prompt(prompt_file, prompt_data, chat_type, previous_messages=None):
+def execute_chat_prompt(prompt_file, prompt_data, chat_type, previous_messages=None, function_calls=None):
     # Generate a prompt for the completion type.
     prompt = get_prompt(prompt_file, prompt_data)
     new_message = {"role": "user", "content": prompt}
@@ -173,7 +173,7 @@ def execute_chat_prompt(prompt_file, prompt_data, chat_type, previous_messages=N
             new_message,
         ]
 
-    response = create_gpt_chat_completion(messages, chat_type)
+    response = create_gpt_chat_completion(messages, chat_type, function_calls=function_calls)
 
     messages.append({"role": "assistant", "content": response})
 
diff --git a/euclid/prompts/user_stories/specs.prompt b/euclid/prompts/user_stories/specs.prompt
index 269cc6f..d36453c 100644
--- a/euclid/prompts/user_stories/specs.prompt
+++ b/euclid/prompts/user_stories/specs.prompt
@@ -13,4 +13,6 @@ A: {{ clarification.answer }}
 
 Think step by step about the description for the app Euclid and the additional questions and answers and break down user stories. You will think about the app description and the answers listed and create a list of all user stories. A user story is a description of how a user can interact with the app. For example, if an app's description is `Create a script that finds Youtube channels with the word "test" inside the channel name`, user stories could be:
 - `user will run the script from the CLI`
-- `user will get the list of all channels in a CSV file`
\ No newline at end of file
+- `user will get the list of all channels in a CSV file`
+
+Return the list of user stories in a JSON array.
\ No newline at end of file
diff --git a/euclid/steps/user_stories/user_stories.py b/euclid/steps/user_stories/user_stories.py
index 181188e..b350267 100644
--- a/euclid/steps/user_stories/user_stories.py
+++ b/euclid/steps/user_stories/user_stories.py
@@ -6,6 +6,7 @@ from utils.utils import execute_step, split_into_bullets, find_role_from_step, g
 from database.database import save_progress, get_progress_steps
 from logger.logger import logger
 from prompts.prompts import get_additional_info_from_user, execute_chat_prompt
+from const.function_calls import USER_STORIES
 
 
 def get_user_stories(summary, args):
@@ -32,11 +33,12 @@ def get_user_stories(summary, args):
     logger.info(f"Generating user stories...")
 
     user_stories, user_stories_messages = execute_chat_prompt('user_stories/specs.prompt',
-                                       {'prompt': summary, 'app_type': args['app_type']},
-                                       current_step)
+                                        {'prompt': summary, 'app_type': args['app_type']},
+                                        current_step,
+                                        function_calls=USER_STORIES)
 
-    logger.info(split_into_bullets(user_stories))
-    user_stories = get_additional_info_from_user(split_into_bullets(user_stories), role)
+    logger.info(user_stories)
+    user_stories = get_additional_info_from_user(user_stories, role)
 
     logger.info(f"Final user stories: {user_stories}")
 
diff --git a/euclid/utils/llm_connection.py b/euclid/utils/llm_connection.py
index da83de6..df678f8 100644
--- a/euclid/utils/llm_connection.py
+++ b/euclid/utils/llm_connection.py
@@ -61,12 +61,12 @@ def create_gpt_chat_completion(messages: List[dict], req_type, min_tokens=MIN_TO
 
     if function_calls is not None:
         gpt_data['functions'] = function_calls['definitions']
-        gpt_data['function_call'] = "auto"
+        gpt_data['function_call'] = { 'name': function_calls['definitions'][0]['name'] }
 
     try:
         response = stream_gpt_completion(gpt_data, req_type)
         if 'function_calls' in response and function_calls is not None:
-            function_calls['callback'](response['function_calls']);
+            return function_calls['functions'][response['function_calls']['name']](**response['function_calls']['arguments']);
         elif 'text' in response:
             return response['text']
     except Exception as e:
@@ -133,6 +133,10 @@ def stream_gpt_completion(data, req_type):
                 if content:
                     gpt_response += content
 
+    if function_calls['arguments'] != '':
+        logger.info(f'Response via function call: {function_calls["arguments"]}')
+        function_calls['arguments'] = json.loads(function_calls['arguments'])
+        return { 'function_calls': function_calls };
     logger.info(f'Response message: {gpt_response}')
     new_code = postprocessing(gpt_response, req_type)  # TODO add type dynamically
     return { 'text': new_code }