The Intercom Sync plugin from Highways will automatically send events from WooCommerce Bookings to Intercom. By default, the app sends the following events:
Booking Created (wc_booking_created)
Booking Cancelled (wc_booking_cancelled)
Booking Completed (wc_booking_complete)
The filter iwp_permitted_events can be used to selectively disable events.
Each event has the ability to add a tag via an event-specific filter. For example, the wc_booking_complete event has a tag filter called iwp_woocommerce_booking_complete. By default, no tags are applied for any WooCommerce Booking event.