Code:
awk '/still logged in/ {printf "%s,%s,%s,%s %s %s %s,%s %s %s\n", $1,$2,$3,$4,$5,$6,$7,$8,$9,$10; next}
/reboot/ {printf "%s,%s %s,%s,%s %s %s %s %s %s\n", $1,$2,$3,$4,$5,$6,$7,$8,$9,$10; next}
{printf "%s,%s,%s,%s %s %s %s %s %s %s\n", $1,$2,$3,$4,$5,$6,$7,$8,$9,$10}' /my/urfile