fixed error

app.py

@@ -4,7 +4,7 @@ from huggingface_hub import InferenceClient
 client = InferenceClient("microsoft/phi-4")
 
 def respond(message,history): #function to return the history of messages sent
-    messages[{"role": "system", "content": "You are a friendly chatbot!"}]
+    message[{"role": "system", "content": "You are a friendly chatbot!"}]
 
     if history:
         messages.extend(history)
@@ -14,7 +14,7 @@ def respond(message,history): #function to return the history of messages sent
     
     responses = client.chat_completion(
         messages,
-        max_token = 568
+        max_tokens = 568
     )
     return response['choices'][0]['message']['content'].strip()