You can change permalink tour to another string such as www.website.com/event/new but can not remove it.
You can set permalink in theme options panel. http://prntscr.com/lvxb8y
Do you have an option in City tours theme where i can change structure of the permalink? I would like to delete""/tour"".
For example, instead of www.website.com/tour/new to be www.website.com/new.