 The French also concur that the phrase is insincere . Author Natalie Schorr wrote that the French frequently say " bonne journée " — " good day " in French — and do not consider it to be insincere . Schorr explains that " bonne journée " is a " gracious formule de politesse " , similar to merci and s 'il vous plaît . However , " have a nice day " sounds like a trite phrase spoken by a telemarketer . 
