Welcome back, language barrier. It's been a while. I've missed you.
1. Apparently, North Americans don’t ‘reckon’. I ‘reckon’ things all the time. I ask people what they ‘reckon’. I did it the other day. And everyone fell about. Apparently, the only North Americans who ‘reckon’ things are people who might ‘reckon’ they’ll go outside and skin them a small amphibian from the swamp for breakfast before cracking open their first morning beer with their teeth, or something. Brits and Kiwis reckon things; Canadians Do Not.
2. The only correct response to ‘thank you’ is ‘you’re welcome.’ It is not ‘not at all.’ This is a very hard thing for me to learn. When I am on the phone to a library, either performing or having performed some useful service such as finding them a book, they say thank you, because library people are nice like that. And I say, “not at all.” It’s automatic. I have tried changing it to ‘you’re welcome’ and tripped over it. But they don’t get ‘not at all’. There’s always a suspicious pause at the other end of the line, during which time they are plainly Not Getting It. Then they uncertainly go, “um, okay then, so...never mind,” and hang up.