I have a skill that I'm developing where I need some additional information from a user. The base system does not have an 'account'. The user can sign up for alerts on a website and we only record their email/sms/voice contact information. I can use the email address and attempt to match it in the base system, but this won't necessarily work for obvious reasons. What is the recommended way to get additional information from a user? Is it possible to display a custom card in the app where they can set this custom field? Do I just add an intent to the app to gather this information and redirect them to it if they attempt to use it?