what cable is used for a A1465 air book?

click on "accessories" on the home page

search for "made by apple" and scroll for your MacBook then search for the power adaptor/chord.

i would send you a link but there are too many options.

there are 3rd party adaptors for cheaper prices, but they are hit and miss as far as durability.

See here: Find the right power adapter and cable for your Mac notebook - Apple Support

Thar model number corresponds to an 11" 2012, 2013, 2014 or 2015 MacBook Air which all use a 45 watt Magsafe 2 charger with the cable built in. That is the cable is not a separate part you can buy.

Here: Apple 45W MagSafe Power Adapter - Apple