You say, 'Hail, Banker Granger'
Banker Granger says, 'Hello there, _____. New Tanaan has done all it can to accommodate every adventurer in every way possible in hopes of making this astral city feel as much as home as your native world. If you have the need of a banker at this time, you need not search any longer. I have volunteered my time to help you and all of New Tanaan's citizens with their everyday storage and monetary needs, within reason, of course.'