It's always nicer to be sat next to a companion whilst travelling. It's normally fine to ask the cabin crew if you can switch seats, although you'll usually have to wait until all passengers are on board first, and sometimes even until after take-off.
Just like in the movies, the cabin crew will be able to help you find a doctor on board if you need one. In return, doctors can receive benefits from airlines.
Now, check out the video above for five more freebies you can get whilst you travel by air!