Add FLAG signs beside 'English / Francais' on top right page

Sometimes, for our rental property, I get an inquiry from a German or an English person who speaks very good French and who send me the inquiry in French.

So I send her/him the French version of our 'PromoteMyPlace' link.

Several times, after sending our link, the person told us that their Family don't speak French so they would like to get our English version 'PMP' link.

That means that they have NOT seen on the top right of our page your 'English / Francais' sign.

Would that be possible to add an English FLAG sign beside 'English' and a French FLAG sign beside 'Francais' ? 

So they can see more easily that can switch fem French to English.

Thanks,  Bertrand (Louyot)