update re format

app.py

@@ -1128,7 +1128,7 @@ def chathmi3(message, history2):
 
 def CheckFileinResp(response):
     try:
-        pattern = r'sample-\w+\.wav'
+        pattern = r'sample-(?:\d{8})-(?:\d{6})\.wav'
         result = re.findall(pattern, response)
         print("result of check file in response:", result)
         return result[-1]