May contain spoilers

I beat the lost patrol for paladin Danse but can't seem to get any more quests besides the quartermastery or cleansing the commonwealth. Is there somewhere else the brotherhood is besides the police station? How do I get the next quest?

There is supposedly a mission where we take a vertabird flight but I can't get him to give it to me. It seems I need to be a knight and I'm an initiate, how do I get promoted?

Do another important quest, something will happen. Trust me:)