Show Airbnb reservation requests and cancellations in the inbox, even when the guest hasn't sent a message

Problem / context

Sparrow's inbox shows a conversation once there's a message in it. When a guest requests to book on Airbnb and then cancels without writing anything, the thread has no message, so nothing appears in Sparrow. It only shows up once the team sends a message from Airbnb.

Teams that work from Sparrow don't see these requests or cancellations, and have to check Airbnb separately to catch them.

Requested capability

Show Airbnb reservation requests and their outcome in the Sparrow inbox as they happen, even when the guest hasn't sent a message, so the team can see them and follow up from Sparrow.

Detail / spec

• Create the conversation when a reservation request arrives, showing the request details: guest, listing, dates.

• Update it when the request is accepted, declined, expires or is cancelled, with the status visible in the inbox.

• Let the team message the guest from Sparrow, for example to follow up on a cancelled request.

• Let teams filter these threads, or hide them, so they don't crowd the inbox.

• Optional: rules can act on these events, for example to label or assign a cancelled request, or have Chirp AI draft a follow-up.

Acceptance criteria

• A reservation request with no guest message appears in Sparrow when it's made.

• A cancelled or expired request shows its status in Sparrow without anyone posting in Airbnb.

• The team can message the guest from that conversation in Sparrow.