Japan's All Nippon Airways Co. and state-owned Vietnam Airlines agreed Monday to pursue a joint venture to coordinate fares and flight schedules on routes including those between the two countries.The deal would deepen a partnership dating back to 2016, when ANA's parent, ANA Holdings Inc., bought a stake in Vietnam Airlines. ANA Holdings currently owns 5.62 percent of the carrier.The airlines already cooperate on code-sharing flights, frequent flyer programs and airport services but set fares and schedules separately.After securing approval from authorities in Japan and Vietnam, including …READ FULL ARTICLE