Samsung air conditioner doesn't have the quiet mode for routines or schedule

I was more thinking of if there is a voice command for Alexa to change to different modes like “Alexa set my air conditioner to quiet mode”. If so, you can create a virtual switch with contact sensor in ST and use that to trigger an Alexa custom action in a routine to simulate speaking the command(s) when the switch is turned on/off in ST Routines. I’m using this method for my Ecobee Thermostat because the program modes aren’t exposed in the ST-Ecobee integration but are changeable using the Ecobee Alexa skill.