protected function askAssignment()
    {
        $this->assignments = $this->fetchAssignments();
        $names = collect($this->assignments)->pluck('name')->toArray();
        $default = array_search($this->currentAssignment(),$names);
        $selected = $this->choice('Assignment?',$names,$default);
        return $this->findAssignmentByName($selected)->id;
    }