digraph{
    graph [
        bgcolor="#FFFFFFF00",
        rankdir=LR,
        ];

    flight1 [label=flight];
    flight2 [label=flight];
    cancelled [label="cancelled(flight)"];
    resumed [label="resumed(waiting)"];

    flight1 -> cancelled;
    cancelled -> flight2;
    cancelled -> released;
    released -> forgotten;

    cancelled -> resumed [dir=both];
    resumed -> flight2;
    resumed -> memory;
    resumed -> waiting;
}
