Update app.py

app.py

@@ -7,9 +7,9 @@ global tokenizer, model, script_speaker_name, script_responder_name
 tokenizer = GPT2Tokenizer.from_pretrained("ethzanalytics/ai-msgbot-gpt2-XL-dialogue")
 model = GPT2LMHeadModel.from_pretrained("ethzanalytics/ai-msgbot-gpt2-XL-dialogue", pad_token_id=tokenizer.eos_token_id)
 
-script_speaker_name = person alpha
+script_speaker_name = "person alpha"
 
-script_responder_name = person beta
+script_responder_name = "person beta"
 
 def output(prompt):
     sentence = script_speaker_name + ': ' + prompt + '\n' + script_responder_name + ': '