How do I create automatic dialogue sequence between player and npc?

Im trying to figure out a way when the player walks up to a Npc, on collision there is dialloguq. (i know how to do this) But I want that after the first on collision text from the NPC maybe the players sprite will say something then the npc and so on depending on how many lines I need. I think i would perfer automatic instead of clicking to progress but if it easier to do with clicking i will do that LOL. I might also want to lock the player in place so player doesnt walk away from the lore drop idk

For the dialogue can do with instance variable on the npc, so default is 0 - player presses chat button then if var= 0 show text '1', when you next press the button increase the variable by 1, if var=1 then show text '2' etc under that particular npc.

To stop the player from moving, when you start to chat you can set a global variable to 1 that was 0 before by default. Then under your player movement events add a condition if that var=0, so when it is 1 you cannot move. After chat has finished, set that global variable back to 0.