You could go for 46A/K or further back, as this is where the aircraft goes 2-4-2 and you only have one person next to you.

I think DXB-LHE is a 777-200, so you could opt for 37A/K or further back to get the 2 seater row. Some people also say that the window seats have slightly more legroom in these rows as the seats are slightly angled, I am personally not sure about that though. Make sure to check in manage my booking which layout they will be using on your date of travel though.