My sister in law is a travel agent and has to use this. It looks god awful, but she is quite efficient in it. Similar to finding companies still using AS400 systems...not modern in the slightest, but efficient for skilled users.
In some ways AS/400 is still more modern than most systems. Flat, persistent address space and capability security? I'm still hoping that the ideas in AS/400 will become mainstream.
Our main customer has a global network of AS/400 systems. The employees make fun of the "old" looking text interface, but that system is pretty much bullet proof. The only times I ever see it go down are when their Windows based DNS servers crash.