diff --git a/src/chatdbg/conversation/__init__.py b/src/chatdbg/conversation/__init__.py
index 9584e3b..ba313a3 100644
--- a/src/chatdbg/conversation/__init__.py
+++ b/src/chatdbg/conversation/__init__.py
@@ -1,8 +1,9 @@
+import json
 import textwrap
 
 import llm_utils
 
-from . import functions
+from .functions_lldb import LldbFunctions
 
 
 def get_truncated_error_message(args, diagnostic) -> str:
@@ -36,7 +37,7 @@ def build_diagnostic_string():
 
 
 def converse(client, args, diagnostic):
-    fns = functions.Functions(args)
+    fns = LldbFunctions(args)
     available_functions_names = [fn["function"]["name"] for fn in fns.as_tools()]
     system_message = textwrap.dedent(
         f"""
@@ -65,7 +66,9 @@ def converse(client, args, diagnostic):
         choice = completion.choices[0]
         if choice.finish_reason == "tool_calls":
             for tool_call in choice.message.tool_calls:
-                function_response = fns.dispatch(tool_call.function)
+                name = tool_call.function.name
+                arguments = json.loads(tool_call.function.arguments)
+                function_response = fns.dispatch(name, arguments)
                 if function_response:
                     conversation.append(choice.message)
                     conversation.append(
diff --git a/src/chatdbg/conversation/functions.py b/src/chatdbg/conversation/functions_interface.py
similarity index 68%
rename from src/chatdbg/conversation/functions.py
rename to src/chatdbg/conversation/functions_interface.py
index db2100c..c74e74c 100644
--- a/src/chatdbg/conversation/functions.py
+++ b/src/chatdbg/conversation/functions_interface.py
@@ -1,11 +1,9 @@
-import json
-import os
 from typing import Optional
 
 import llm_utils
 
 
-class Functions:
+class BaseFunctions:
     def __init__(self, args):
         self.args = args
 
@@ -15,20 +13,17 @@ def as_tools(self):
             for schema in [self.get_code_surrounding_schema()]
         ]
 
-    def dispatch(self, function_call) -> Optional[str]:
-        arguments = json.loads(function_call.arguments)
-        print(
-            f"Calling: {function_call.name}({', '.join([f'{k}={v}' for k, v in arguments.items()])})"
-        )
-        try:
-            if function_call.name == "get_code_surrounding":
-                return self.get_code_surrounding(
-                    arguments["filename"], arguments["lineno"]
-                )
-            else:
-                raise ValueError("No such function.")
-        except Exception as e:
-            print(e)
+    def dispatch(self, name, arguments) -> Optional[str]:
+        if name == "get_code_surrounding":
+            filename = arguments["filename"]
+            lineno = arguments["lineno"]
+            result = self.get_code_surrounding(filename, lineno)
+
+            print(f"Calling get_code_surrounding({filename}, {lineno})...")
+            print(result)
+            print()
+
+            return result
         return None
 
     def get_code_surrounding_schema(self):
diff --git a/src/chatdbg/conversation/functions_lldb.py b/src/chatdbg/conversation/functions_lldb.py
new file mode 100644
index 0000000..956732e
--- /dev/null
+++ b/src/chatdbg/conversation/functions_lldb.py
@@ -0,0 +1,19 @@
+import json
+from typing import Optional
+
+import llm_utils
+
+from .functions_interface import BaseFunctions
+
+
+class LldbFunctions(BaseFunctions):
+    def __init__(self, args):
+        super().__init__(args)
+
+    def as_tools(self):
+        return super().as_tools() + [
+            {"type": "function", "function": schema} for schema in []
+        ]
+
+    def dispatch(self, name, arguments) -> Optional[str]:
+        return super().dispatch(name, arguments)