not able to select from &to field in makemytrip in selenium 
<https://www.makemytrip.com/>

```
driver.get("http://makemytrip.com");

        WebElement source=driver.findElement(By.xpath("//input[@id='fromCity']"));
        source.clear();
        source.sendKeys("MUM");
        Thread.sleep(2000);
        source.sendKeys(Keys.ENTER);

        WebElement destination=driver.findElement(By.xpath("//input[@id='toCity']"));
        destination.clear();
        destination.sendKeys("DEL");
        Thread.sleep(2000);
        destination.sendKeys(Keys.ARROW_DOWN);
        destination.sendKeys(Keys.ENTER);

```