Having issue in selecting drop down element under makemytrip website - selenium

Question

Having issue in selecting drop down element under the following website
http://flights.makemytrip.com/makemytrip/fareCal.do?intid=NewHP_to_DF_FC_Menu
I'm unable to select any one of the cities listed below.
Please help me out resolving the same.
Scenarios Tried
driver.findElement(By.className("chzn-single")).click();
driver.findElement(By.xpath("//span[contains,'NewDelhi']")).click();
driver.findElement(By.xpath("//span[#id='fromcity_chzn']")).click();

Answer 1

This works:
WebElement leavingFrom = driver.findElement(By.xpath("//*[#id='fromcity_chzn']/a"));
WebElement goingTo = driver.findElement(By.xpath("//*[#id='tocity_chzn']/a"));
leavingFrom.click();
leavingFrom.sendKeys("Bangalore");
leavingFrom.sendKeys(Keys.RETURN);
goingTo.click();
goingTo.sendKeys("Goa");
goingTo.sendKeys(Keys.RETURN);

Answer 2

Here is working sample:
//First get main dropDowns
var leavingFromDropDown = driver.FindElement(By.Css("#fromcity_chzn"));
var goingToDropDown = driver.FindElement(By.Css("#tocity_chzn"));
//Select value from first dropDown using dropDown items index
//First click on dropDown to open it
leavingFromDropDown.click();
//Now find items in it and click on any item using it's index (also can be used method to access this elements using their names
leavingFromDropDown.FindElements(By.Css(".active-result"))[1].click();
//this dropDown closes automatically, but if not you need to click on it again to close
//Same perform with second element
goingToDropDown.click();
goingToDropDown.FindElements(By.Css(".active-result"))[2].click();
If you want to use input box to enter any value from DropDown you need to find that element and using sendKeys set it's value. E.g.:
leavingFromDropDown.click();
var input = leavingFromDropDown.FindElement(By.Css(".chzn-search > input"));
input.sendKeys('Goa');
input.sendKeys(Keys.Enter);//or tab