The post that you have mentioned above is appropriate and would suffice your requirement.
Kindly try and let us know if you need any further clarification on the same.
@sheela.dimayuga We should be able to fetch a limited set of user details as provided by Facebook Graph API . The retrieved information should be available under the user context of the user while communicating with the chat bot over the Facebook channel.
While the information being fetched depends on the permissions enabled and approved at the application created on Facebook and also that been sent by the channel itself ( Its the same application on FB the developer uses for enabling the channel on Kore.ai), please refer to the below API which gives you an insight on the user details that can be retrieved.