Abstract: A method and system for coordinating travel arrangements. A global travel utility (“GTU”) system allows travel service provider (“TSP”) systems to be connected via a communications link to a “concierge” system. The GTU system includes computer systems that execute the TSP systems and the concierge system. The concierge system provides components for assisting the traveler in creating an itinerary and for storing traveler profile information. The concierge system also includes an event notification component that receives various event notifications from the TSP systems. Upon receiving an unanticipated event notification, the concierge system automatically identifies the itineraries impacted by the event and automatically changes those itineraries as appropriate.