When you use JSF or Seam navigation rules, Seam switches to a conversation by restoring the current view-id for that conversation. The descriptive text for the workspace is defined in a file called pages.xml that Seam expects to find in the WEB-INF directory, right next to faces-config.xml:

<pages>
    <page view-id="/main.xhtml">Search hotels: #{hotelBooking.searchString}</page>
    <page view-id="/hotel.xhtml">View hotel: #{hotel.name}</page>
    <page view-id="/book.xhtml">Book hotel: #{hotel.name}</page>
    <page view-id="/confirm.xhtml">Confirm: #{booking.description}</page>
</pages>

Note that if this file is missing, the Seam application will continue to work perfectly! The only missing functionality will be the ability to switch workspaces.