<human>: Can you give me a shortened version of the text?

My wife and I took our two daughters to McDonalds for dinner. We were eating our food in the playplace and a man sat down across from us with a laptop to use McD's wifi. He asked me how much my Big Mac was and I said the meal was $5.99. He said, "No, just the burger." I told him I didn't know and he was quiet after that. Now, I know what it is like to have no money and have to take my laptop to McDonalds to finish a project or do homework, so I assumed from our brief conversation that he was hungry. After a minute of contemplation I told my wife I was going to go order him a meal. People have done this for me and I appreciated it. 

Now to the point. I ordered him a Big Mac meal and waited about 15 minutes for it to get done. It turned out that the two people in front of me had placed huge orders. I got the food and handed the tray to the man. He looks at me and said, "I'm not hungry." I told him I just though he might be because of our conversation and that he could save it for later. He said, "I just wanted to know how much they were. I ate before I got here. I have plenty of money for my own food." 

I sat down to finish my meal. My family had already finished theirs while I waited in line and were ready to go, and on our way out I saw the man get up and dump the whole tray of un-eaten food in the garbage.

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<bot>: ] Missed having a quick meal with my family because I ordered food for a man and he threw it in the garbage.