Evercore ISI recommended that both Saber (SABR) and Travelport (TVPT) be bought on weakness after Lufthansa (DLKAY) announced plans to impose a 16 euro surcharge on all of its airline bookings made through their systems and that of peer Amadeus. Amadeus has a dominant share with Lufthansa and the firm does not expect other airlines to follow its lead given the importance of the GDS channel, Evercore said. Evercore also noted that the airline imposed a surcharge once before and then reached a full-content distribution deal with no surcharges with Amadeus afterward.