<h1>Stranded passengers face abrupt flight cancellations and poor communication while airline cites system reboot and proactive cancellations.</h1> Widespread short-notice flight cancellations and rescheduling by a major carrier caused prolonged passenger stranding and confrontations, with passengers alleging inadequate communication, unresponsiveness, lack of assistance and compensation, abrupt timing changes communicated hours before departure, and redirection between airports without reliable information; the airline said short-term proactive cancellations were being made to reboot systems and decongest airports to restore operations.