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"
Comment allez-vous monsieur? = How are you sir?
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."
Bonjour Monsieur
monsieur et madame
au revoir monsieur
Mon plesire monsieure