diff --git a/dspy/adapters/chat_adapter.py b/dspy/adapters/chat_adapter.py
index 81e037c576..8d73b6d3f3 100644
--- a/dspy/adapters/chat_adapter.py
+++ b/dspy/adapters/chat_adapter.py
@@ -86,7 +86,7 @@ def parse(self, signature, completion, _parse_values=True):
     def format_turn(self, signature, values, role, incomplete=False):
         return format_turn(signature, values, role, incomplete)
 
-    def format_fields(self, signature, values):
+    def format_fields(self, signature, values, role):
         fields_with_values = {
             FieldInfoWithName(name=field_name, info=field_info): values.get(
                 field_name, "Not supplied for this particular example."
diff --git a/dspy/adapters/json_adapter.py b/dspy/adapters/json_adapter.py
index f319d40fec..a1b1bedd34 100644
--- a/dspy/adapters/json_adapter.py
+++ b/dspy/adapters/json_adapter.py
@@ -90,7 +90,7 @@ def parse(self, signature, completion, _parse_values=True):
     def format_turn(self, signature, values, role, incomplete=False):
         return format_turn(signature, values, role, incomplete)
     
-    def format_fields(self, signature, values):
+    def format_fields(self, signature, values, role):
         fields_with_values = {
             FieldInfoWithName(name=field_name, info=field_info): values.get(
                 field_name, "Not supplied for this particular example."
@@ -99,8 +99,7 @@ def format_fields(self, signature, values):
             if field_name in values
         }
 
-        return format_fields(role='user', fields_with_values=fields_with_values)
-
+        return format_fields(role=role, fields_with_values=fields_with_values)
         
 
 def parse_value(value, annotation):
diff --git a/dspy/predict/react.py b/dspy/predict/react.py
index 2095d9ba6e..a26f538f0b 100644
--- a/dspy/predict/react.py
+++ b/dspy/predict/react.py
@@ -47,7 +47,7 @@ def __init__(self, signature, tools: list[Callable], max_iters=5):
 
         finish_desc = f"Signals that the final outputs, i.e. {outputs_}, are now available and marks the task as complete."
         finish_args = {} #k: v.annotation for k, v in signature.output_fields.items()}
-        tools["finish"] = Tool(func=lambda **kwargs: kwargs, name="finish", desc=finish_desc, args=finish_args)
+        tools["finish"] = Tool(func=lambda **kwargs: "Completed.", name="finish", desc=finish_desc, args=finish_args)
 
         for idx, tool in enumerate(tools.values()):
             desc = tool.desc.replace("\n", "  ")
@@ -77,10 +77,8 @@ def forward(self, **input_args):
 
         def format(trajectory_: dict[str, Any], last_iteration: bool):
             adapter = dspy.settings.adapter or dspy.ChatAdapter()
-            blob = adapter.format_fields(dspy.Signature(f"{', '.join(trajectory_.keys())} -> x"), trajectory_)
-            warning = f"\n\nWarning: The maximum number of iterations ({self.max_iters}) has been reached."
-            warning += " You must now produce the finish action."
-            return blob + (warning if last_iteration else "")
+            signature_ = dspy.Signature(f"{', '.join(trajectory_.keys())} -> x")
+            return adapter.format_fields(signature_, trajectory_, role='user')
 
         for idx in range(self.max_iters):
             pred = self.react(**input_args, trajectory=format(trajectory, last_iteration=(idx == self.max_iters-1)))
diff --git a/dspy/teleprompt/bootstrap.py b/dspy/teleprompt/bootstrap.py
index d6787cc628..b172448288 100644
--- a/dspy/teleprompt/bootstrap.py
+++ b/dspy/teleprompt/bootstrap.py
@@ -150,7 +150,7 @@ def _bootstrap(self, *, max_bootstraps=None):
             for round_idx in range(self.max_rounds):
                 bootstrap_attempts += 1
 
-                if success := self._bootstrap_one_example(example, round_idx):
+                if self._bootstrap_one_example(example, round_idx):
                     bootstrapped[example_idx] = True
                     break