just to add to FC's very good advice.

When entering you info into the booking engine enter only the start and end destination and omit DXB unless you plan to do a stopover.
IE, BHX - PEK + date / HKG - BKK + date / BKK - BHX + date

Secondly EK dose not do NRT (listed as Tokyo), EK fly's DXB to TYO for Tokyo, presume Tokyo has two airports.

Have good trip.

BB