After being trained by the US carriers ... I requested something from the FAs on the way back from the rest room on CX J once and BA J another time, and both times i was met with a cheerful "oh you should just hit the call button" followed by excellent service at the seat. even in Y i have seen EK FAs very amiable and responsive whereas the US FAs are snappy relatively speaking. Moral of the story ... When in Rome ...