We are looking for some dwarf flowering plants that bloom a long time.

Yes there are many from Annuals, Perennials, Alpines. recommend a good book A - Z of flowering Plants.........

Yep, there are, from tiny African violets to dwaref vines to Crepe Myrtles. It depends on where you intend to have them, inside or out. There are fewer long flowering inside plants than outside ones. Logees is a pod site for unusual inside plants, otherwise I’d just search online. There are also many varieties of miniature roses that bloom for a long time, though I’ve only had luck with growing them outside

Petunias or most annuals bloom for months, but you will eventually have to replant some. Holly bushes have red berries most the year, begonias bloom most the year round and will live a long time if they receive good care.