South Korean President Park Geun-hye said Friday she wants to build trust with North Korea and work together for mutual development if Pyongyang ends its provocative behavior and comes forward for talks.The remark, made in a meeting with U.S. Secretary of State John Kerry, is the latest in a series of indications that Park is seeking to open a dialogue with Pyongyang to cool heightened tensions in the midsts of a torrent of war threats from the communist nation.