Saying thank you to someone who you barely know and for something unimprotant like offering you a seat is easy. I tgets more complicated if you have to say thank you to someone who you know, but who isn´t really your friend. What should give such a person as a thank you for , because you have to give him something to be polite and not rude or mean. Of course you can´t ask him right away, because that would totally ruin the surprise, but if you get th wrong thing it turns into a horrible and embarassing situation. It would be even worse if you get him or her something too huge for the occasion and you realize that at the moment you give it to him or her. Now nobody knows what to say or do and you want to vanish. So what the hell can you do?
As you can probably tell I am in such a situation. And now I am going to buy a huge bar of milka chocolate, because I am not original or creative or especially good when it comes to a "thank you "