Can someone help me with this dialog script?

How would I get the NPC to follow the player when Choice4 is selected? what sort of code do I need to add to the code below

Hierarchy of where the script is. NPC>Head>Dialog>My script is here>Choice4

Please help me! thanks!

script.Parent.DialogChoiceSelected:connect(function(player,choice)

  local humanoid = player.Character:findFirstChild("Humanoid")

    if not humanoid then return end --End the function if the humanoid isn't found
local stats = player:FindFirstChild('leaderstats')
    if not stats then return end
local rep = stats:FindFirstChild('Reputation')
    if not rep then return end

    if choice.Name == "Choice1" then --If the DialogChoice's name is Die then do the following

        wait(1)
rep.Value = rep.Value - 1       

    elseif choice.Name == "Choice2" then

        wait(1) --Make the player jump. -- humanoid.Jump = true
rep.Value = rep.Value + 1

elseif choice.Name == "Choice3" then

        wait(1)
rep.Value = rep.Value - 2



local pathfinding = game:GetService("PathfindingService")

function getDistanceFrom(part1, part2, distance)
if (part1.Position - part2.Position).magnitude < distance then
return true
end
return false
end

elseif choice.Name == "Choice4" then
while true do
wait(0.8) -- edit this to your desire, this is how much he changes his path
local char = player.Character
local path = pathfinding:ComputeSmoothPathAsync(NPC.Torso.Position, char.Torso.Position)

for i, v in pairs(path:GetPointCoordinates()) do -- forgot the name of that method, could be wrong
NPC.Humanoid:MoveTo(v)
NPC.Humanoid.MoveToFinished:wait()
end

end
end
    end

end)