Bonsoir, monsieur.
Passez une bonne soirée, Monsieur !
If you are talking to one person you should say, "Good evening sir." However if you are talking to more than one person you could say, "Good evening gentlemen."
Good evening, sir. Good evening, ma'am. It's just been a lovely evening, but I must go now.
Oui monsieur
it's "monsieur"
it is no good = ce n'est pas bien (food) is no good = ce n'est pas bon
"Good night, sir" in French is "Bonne nuit, monsieur."
You can say "Je vais bien, monsieur" in French to convey "I'm fine, sir."
Bonjour Monsieur
au revoir monsieur
monsieur et madame
Mon plesire monsieure