Before I start, if I'm asking this in the wrong place, please feel free to direct me to the right place to ask this.
I have a story where one of the character is twenty-something in 1960's Dallas Texas.
Would this person be likely to use words such as 'Sure' or 'Kinda' or Hell', as in 'Hell, yes'.
Thanks in advance
There is a research forum here that you might try to see if you get more responses. I can't speak to the 1960's, but for current Dallas English, I wouldn't think there'd be any problem with "sure, kinda," or "hell." However, "Hell, yes," is unlikely, imo, because "hell" is informal speech and "yes" is formal. They'd be far more likely, at least in current times, to say "hell, yeah."
Also be aware of what SEC your MC is from. There are some classes that would never use such language as it would be considered "beneath" them, or it would be used to specific effect, i.e. to startle someone by its vulgarity (more specifically "hell," but "sure" and "kinda"
might be looked down on as indicative of lower class speech patterns.) There are other groups that use such language as often as they breathe. Just depends on the people.
http://en.wikipedia.org/wiki/Texan_English is an article I've read that seems to treat it pretty comprehensibly, there wasn't much I disagreed with as a modern Texas speaker, and it showed awareness that not all parts of Texas have the same speech patterns.
Hope this helps.