Many inquiring and humorous quotes have been posted in IMDb. Many thanks to the contributors. The first quote listed in the site hits the spot on the relationship between many teens and their parents (added three lines* for full context):
Lady Bird: I wish that you liked me.*
Marion: Of course I love you.*
Lady Bird: But do you like me?*
(Conversation continued as the first quote in IMDb page)
Marion: I want you to be the very best version of yourself that you can be.
Lady Bird: What if this is the best version?