Yeh you get those groups. And generally you actually eventually finish the things with them as people are happy to work together and stick at it.
The group I completed it with was great like that as well.
Was that the group I found? Those were cool. I got invited into a different group last night, one of the guys kept shouting and swearing at the sword user, was so annoying. He would get pissed about anyone dying too, I just left those guys. 4 of them were in a clan anyway.