add features in a joomla component

first if you interested, please contact me, and I will show you how the component works. This features are easy to add. In Flight Manager/Flights: [login to view URL] an edit box to write the currency of each flight. Because my flight are charters and they are in rubles, usd, euro. [login to view URL] an edit box to write the name of the airport of each flight. And in the Front-End: a row where will show the name of the airport(as i show in the picture [login to view URL]) 3. Add Amount of days of each roundtrip price of each flight (this is because the charter flight ha different prices in roundtrip in dependency of the days) for example: Ho Chi Minh(departure 01.01.2013) -Ha Noi(departure 05.01.2013) cost 100usd, but Ho Chi Minh(departure 01.01.2013) -Ha Noi (departure 29.02.2013) cost 240usd. Note: if [the first departure date from Ho Chi Minh] plus [the quantity of the days], dont coincide with the return departure, then dont show the price in front-end. Add a button to add again this 3 edit boxes as as many times as I want, I show it in the picture days_roundtrip.