//Read sentence
delay(5000); //Delay of 5 seconds
Serial.println("Write the sentence you want to translate into Morse code on the Message section");  //Prints the action I want the user to make
delay(500); //Delay of 5 seconds
while (Serial.available() == 0){} //Wait for user input  
Sentence = Serial.readString(); //Saves the user input on the String "Sentence"