It means- Thank you for the flash, you are very pretty.
Let's retype that correctly: "Tres jolie". "Merci" "Il n'y a pas de quoi." This would be two people talking . . . here it is in English: "(you're) Very pretty" "Thank-you" "you're welcome".
il est (he is) vous êtes (you are) (but not "il etes": that does not exist)
"where are you"
"Thank you" - Merci. "Thank you very much" - "Merci Beaucoup"
"merci chéri" = "thanks, dear" (or "darling")
you are my life
you are a spaniard
Vous etes sympathique.
Merci d'avoir lu if you mean pastmerci de lire if you mean present
bien merci = fine, thanks
vous etes tres beaux
You are beautifulyou're beautiful (to a woman)