increase max_token as doc suggested.

app.py

@@ -12,7 +12,7 @@ print("key", openai.api_key)
 start_sequence = "\ChatGPT:"
 restart_sequence = "\nMe: "
 
-prompt = "The following is a conversation with an AI assistant. The assistant is helpful, creative, clever, and very friendly.\n\nHuman: Hello, who are you?\nAI: I am an AI created by OpenAI. How can I help you today?\nHuman: "
+prompt = "Start by typing example content. Then use `Me:` or `ChatGPT:` with some clue to train model...\n\nMe: Hello, who are you?\nChatGPT: I am an AI created by OpenAI. How can I help you today?\nMe: "
 
 def openai_create(prompt):
 
@@ -20,13 +20,12 @@ def openai_create(prompt):
     model="text-davinci-003",
     prompt=prompt,
     temperature=0.9,
-    max_tokens=150,
+    max_tokens=500,
     top_p=1,
     frequency_penalty=0,
     presence_penalty=0.6,
     stop=[" Me:", " ChatGPT:"]
     )
-
     return response.choices[0].text