We have purchased tickets for the World Traveler Plus section of a British Airways flight from Dallas to London in May. When we went to confirm seats online. there were none. We called BA and the representative indicated that seats may become available when check-in begins 24 hours before departure although he was neither convincing nor promising. We did contact Mr. Steven Clark, Senior Vice President for Customer Services and Operations as indicated we should do and the response from him was that he was unable to offer us specific seat numbers at this time and that a number of restricted seats will become available when check in opens. Again, there is no guarantee that we will get seats on the flight we paid for and paid extra for in the World Traveler Plus section. We have paid for other travel arrangements in Italy and England and feel we may be in jeopardy of losing these prepaid arrangement if we cannot get on the scheduled flight. All we are asking for is two assigned seats on our flight on May 9 from Dallas to London.