I understand the logic you all bring up.. Nonetheless I was able to book a fare which not only would the website not show, but upon calling again I was not able to replicate.. The fare was pieced together manually .. So I guess at the end of the day I got a favor.. Married Logic aside it's seems that sometimes one must use a TA, and not Delta.. Which is ok by me, but makes me wonder how many people pay more than they should for A-B tickets...