My wife and I are traveling to Austria and Germany this summer and we have some rather weird needs for planes and trains. Here's the background, followed by the question. First, we are flying in and out or Europe together via London on Virgin Atlantic. Once we get to London, she is going to Turkey for 10 days with some friends while I am going to Amsterdam and then Germany. We are going to meet up in Austria (Melk) where we will travel together and then return to London for our journey home.
Here is the question. If we book all the flights ourselves online, my wife will need to fly back to London from Turkey and then to Vienna in order to only buy two plane tickets instead of three. If a travel agent does the booking, hopefully they could book the flights that would have her go from London to Turkey to Vienna back to London without a bunch of wasted "ghost returns". Is it possible for a travel agent to do that? If so, is it possible that it would be cheaper than just buying two separate round trip tickets for her and having her travel back to London in between?
Similarly, I'll have to buy a ticket to Amsterdam and a second one from Vienna to London. Can a travel agent book it so I just buy one ticket and have it be cheaper?