If you want to build citation for a business located in a single city you do not need to change anything according to inner Pages. Why would you do that?
For single location :
Name : Bangi
Address : xxx xx x Texas
Phone : +1 123456789..
Now If you have a multilocation business, yoi can built a single citation for the main branch first without city in the name like above then add a citation for every city like this:
Name: Bangi City ( Bangi Chicago, Bangi New York, Bangi Dallas ...)
Adress: xxx xx xx Chicago / xxx xx xxx Ney York ....
Phone: +1 333333333
The objective of the nap is to know Who you are, where you're located and how to reach out to you. The service you offer in which city does not matter here, so if your business name does not contain any service in it, do not add it .