code added to install a package dateutil

actions/actions.py

@@ -7,7 +7,15 @@ from rasa_sdk.events import SlotSet
 import re
 from twilio.rest import Client
 from datetime import datetime
-from dateutil.parser import parse
+import subprocess
+import sys
+
+try:
+    from dateutil.parser import parse
+except ImportError:
+    subprocess.check_call([sys.executable, "-m", "pip", "install", 'dateutil'])
+finally:
+    from dateutil.parser import parse
 
 account_sid = "ACc460d692e5a467c60b352714b1416140"
 auth_token = "bf2a890f36e3329b52d0516a14097623"