conf is nothing but the python file that contains all the configurations of Bolt and Twilio. If the variable name in your conf.py file is SID then use SID in your main code and if it is anything else then you can use that name in your code.
Make sure you are running all the modules of the Jupiter notebook. You can also place the values directly in the SMS function in a similar way you did for Bolt Function.
sms = Sms('xxxxxxx', 'xxxxxxxx', '+91xxxxxxxxxx', '+1xxxxxxxxx')
Do let me know if you are still stuck
sorry bt the problem was somewhere else, bt anyways thank-you