Travel comms are itinerary-heavy and they change constantly. A "trip" is never one event — it's a flight out, a hotel, a rental car, a dinner reservation, and a flight back. Then the airline shifts the outbound by three hours, the traveler emails "can we push the hotel a night?", and every downstream segment moves. Most "AI travel assistant" demos point a model at a human's inbox and call it a day. That's fine right up until you want the agent to be a participant — to send the itinerary from i...