How to include start up dialogue before the lcd displays the analog data

I am displaying the sensor data on the lcd, however I want to display a start up dialogue before it displays the sensor data at the time of switching on the display. Pls provide help with the code required.

lcd.print (F ("Your dialogue here"));

Thanks. But I need it to be displayed only once, with this code I am having an issue where the dialogue appearing again and again.

So put it in setup ()

Thanks.