winning with no material

I just lost a game with each of us having 1 knight , my opponent said time was important also. he had 4 minutes to my 3 minutes when it became a draw
How do I force it a draw instead of expecting the opponent to be a real person instead of a child?

you must offer a draw and if it is a drawn game the system will award the draw, otherwise the time will keep ticking away.

 I offered a draw 20 times , the guy said time is a factor and refused the draw

 A king and a knight vs a king and a knight is a draw , the server should have ended the game a draw but it did not .

can you post the game, did you have pawns on the board or did he?  Then it is not necessairly a draw.

I looked at the game, looks like a draw to me, maybe someone with more experience will answer why the server did not recognize it as such. 

 King and Knight vs King and Knight no pawns no other pieces ...it was a draw  it was my last game

did you actually hit the offer draw button or just ask him for a draw?

N vs. N is not a draw if time runs out, and your opponent is right: time is a factor. 

If you want the draw, go 50 moves without a capture or repeat the position three times. Some people might be nice and agree to a draw, but they are under no obligation to and I wouldn't think less of someone who didn't.

It's not a draw because mate is still theoretically possible, even if it would require one side basically intentionally letting himself get mated:

This is completely ridiculous, it's not worth 8 stinking internet points to have to run around getting 50 moves in so I can get a draw .If someone gets their jollies that way , good luck to her.

This can't be the rule, as I know King vs two knights is a draw, you need Knight and a bishop or a pawn.

I rank this right up there with all the people who abort if they don't get to be white. 
Willing to do anything for a few cyber points , I hate to think of what they are capable of in real life for a dollar or two. 

Two knights is *theoretically* drawn, not drawn on time. Two knights cannot force a checkmate, so if the defending side plays perfectly it will end in a 50-move or repetition draw. 

Two knights can, however, checkmate if the defender makes a mistake.

If you don't want to play people who are going to try to draw out time wins, don't play blitz and/or play with an increment :)

 It was 1 knight each not 2 knights I had 1 king and 1 knight he had 1 king and 1 knight , no wonder everything is so ridiculous

I don't belive that this is the official rule, this must be a chess.com rule.

So it would have been a draw if the losing side sacs his knight? because the winning side wouldn't have sufficent material? 

 To lose this way I would have to put my king and knight in the corner and help him mate me 

I am starting to get the feeling I am playing a bunch of computer users from some of the answers I have received.