#include <LiquidCrystal.h>
#include<SoftwareSerial.h>
#define Rx 8
#define Tx 6
SoftwareSerial myserial(Rx, Tx);

char data = 0;

const int rs = 5 , en = 4 , d4 = 3 , d5 = 2 , d6 = 1 , d7 = 0;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup()
{
  lcd.begin(16, 2);

  lcd.print("Message");

  myserial.begin(9600);
}
void loop()
{
  lcd.setCursor(0, 1);

  if (myserial.available() > 0)
  {
    data = myserial.read();
    if (data == 'H')
    {
      lcd.print("Hi, There");
    }
    else if (data == 'K')
    {
      lcd.print("Good Day ");
    }
  }

}