n = raw_input("Please choose a number: \n")
if n.strip() == "1":
cityList = UserQuerying.getCityList()
print "Here is all cities that CSAir flies to..."
for city in cityList:
print city
print "\n"
elif n.strip() == "2":
cityName = raw_input("Please type querying city name: \n")
if UserQuerying.getQueryCity(cityName) == False:
print "Sorry, CSAir does not fly to " + cityName
print "\n"
elif n.strip() == "3":
UserQuerying.getStaticalInfomation()
print "\n"
elif n.strip() == "4":
cityCode = raw_input("Please type the city's code: \n")
if UserQuerying.mapCity(cityCode.upper()) == False:
print "Sorry, the city's code is invalid\n"
elif n.strip() == "5":
UserQueryingExpand.addCity()
elif n.strip() == "6":
UserQueryingExpand.removeCity()
elif n.strip() == "7":
UserQueryingExpand.addRoute()
