Hoo boy, you need this thread:
https://forum.purseblog.com/threads/maintaining-a-h-relationship.156549/
What it all boils down to is:
Pick one sales assistant. Pray that person doesn’t move on.
Buy things from that sales associate, preferably from housewares, fine jewelry, or Ready to Wear (hopefully they will be things you like anyway).
After a few purchase sessions, mention you’re hoping to get a Kelly/Birkin one day.
Salesperson will eventually ask for a more precise description of what you want.
Bag offers will eventually start coming in. They may or may not have any relation to what you really want. It’s okay to say no to anything you don’t really want, but don’t say no if they end up procuring your exact request because they won’t treat any other request seriously again.