Plot 2 data lines, same graph, same axis

Hey

I have 2 sets of similar data, both with the same range of values over x and y, that i would like to plot on the smae graph, each with 1 line connecting all data points.

My data looks similar to the following-

x1 y1 x2 y2
23 543 19 490
24 432 23 487
45 456 50 520
32 497 41 510

Thanks for any advice