Stackelementreference exception in if (Citi.equals("MAA")) - selenium

Question

I tried to automate the MakeMyTrip site ,I am getting a stale element reference error in line number 42 which i have highlighted .. I have tried all possible solutions..could u please help me with it ..
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.stream.Stream;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.StaleElementReferenceException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import net.bytebuddy.asm.Advice.Return;
public class Dropdown {
#SuppressWarnings("deprecation")
public static void main(String[] args) throws InterruptedException {
System.setProperty("webdriver.chrome.driver", "C:\\Users\\arthi\\ChromeDriver\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
Actions act = new Actions(driver);
driver.get("https://www.makemytrip.com/");
driver.manage().window().maximize();
WebElement Fromcity = driver.findElement(By.id("fromCity"));
act.doubleClick(Fromcity).perform();
Thread.sleep(1000);
WebElement From = driver.findElement(By.xpath("//*[#placeholder='From']"));
act.doubleClick(From).perform();
From.sendKeys("chenn");
//List Fromcities=driver.findElements(By.xpath("//*[#id='react-autowhatever-1']/div[1]/ul/li/div/div[1]/p"));
List<WebElement> Fromcities = driver.findElements(By.xpath("//ul[#role='listbox']//li/div[1]/div[2]"));
for (WebElement Cities : Fromcities)
{
String Citi = Cities.getText();
**if (Citi.equals("MAA"))** {
try {
Cities.click();
} catch (StaleElementReferenceException ex) {
Fromcities = driver
.findElements(By.xpath("//*[#id='react-autowhatever-1']/div[1]/ul/li/div/div[1]/p"));
Cities.click();
}
}
}
//***to path
driver.findElement(By.xpath("//input[#placeholder='To']")).click();
WebElement ToPlace = driver.findElement(By.xpath("//input[#placeholder='To']"));
act.doubleClick(ToPlace).perform();
ToPlace.sendKeys("mum");
List<WebElement> ToCities = driver.findElements(By.xpath("//ul[#role='listbox']//li/div[1]/div[2]"));
for (WebElement To : ToCities)
{
if (To.getText().contains("BOM")) {
try {
JavascriptExecutor executor = (JavascriptExecutor) driver;
executor.executeScript("arguments[0].click();", To);
} catch (StaleElementReferenceException e) {
ToCities = driver.findElements(By.xpath("//ul[#role='listbox']//li/div[1]/div[2]"));
To.click();
}
List<WebElement> Radiobutton = driver
.findElements(By.xpath("//ul[#class='specialFareNew']/li/div[2]/p"));
for (WebElement Radio : Radiobutton) {
if (Radio.getText().contains("Armed Forces Fares")) {
Radio.click();
System.out.println("got the expected output");
break;
}
}
}
}
}
}