Your plant is a White Bird of Paradise (Strelitzia alba) and it is very unlikely to ever bloom indoors. It is commonly used indoors as a foliage plant. Keep it in front of your sunniest window. It will not bloom unless it is very potbound and yours is in a very large pot. Water it enough to keep it from wilting. Indoors in good conditions, White Birds do tend to outgrow their spaces and eventually need pruning to keep them manageable. Simply cut off the offending leaf stems at the base. Otherwise, they are quite hardy foliage plants with a dramatic appearance in spaces that call for large specimens.
