SSH is Sharm el-Sheikh (Egypt is a large country, not a city) and the usual English name for Belgrado is Belgrade. A couple of other things: there are two airports in New York (JFK and LGA), two in Berlin (TXL and SXF) and two in Paris (CDG and ORY). MIA is Miami International Airport, not the Miami area (which includes PBI and FLL).
BJS is the code for the Beijing metro area; by that logic, Shanghai should be SHA, New York is NYC, Tokyo is TYO, etc. Also, interesting that you chose Itami Airport instead of Kansai, which is probably better known to most travellers.