How to switch state after character finished dashing ?

I try to make a dash for my character and it's seem to work fine but if I hold left or right and press dash button the character only dash a little then continue to move normally
I think this happened because I switch dash state to move state before the character finished the dash. Or maybe it just something else.
Here is my code:

enum{
	IDLE,
	MOVING,
	SHOOTING,
	GUN_N_RUN
	DASH,
	DIE
}

const JUMP = -1000
const GRAVITY = 30
const BULLET = preload("res://BULLET/BULLET 1.tscn")
var SPEED = 600
var states = MOVING
var velocity = Vector2.ZERO
var can_attack = true
var can_dash = true

func _physics_process(_delta):
	print(velocity.x)
	match states:
		IDLE:
			pass
		MOVING:
			movement()
			if Input.is_action_pressed("ui_attack"): 
				states = SHOOTING
			if Input.is_action_just_pressed("ui_dash"):
				states = DASH
		SHOOTING:
			shoot()
			velocity.x = 0
			if Input.is_action_just_released("ui_attack"):
				states = MOVING
			if Input.is_action_pressed("ui_right") or Input.is_action_pressed("ui_left"):
				states = GUN_N_RUN
			if Input.is_action_just_pressed("ui_dash"):
				states = DASH
		GUN_N_RUN:
			shoot()
			movement()
			if Input.is_action_just_released("ui_attack"):
				states = MOVING
			if Input.is_action_just_pressed("ui_dash"):
				states = DASH
		DASH:
			dash()
			if can_dash != true:
				states = MOVING

		DIE:
			pass

func movement():
	if Input.is_action_pressed("ui_right"):
		velocity.x = SPEED 
		$Sprite.flip_h = false 
	if Input.is_action_pressed("ui_left"):
		velocity.x = -SPEED 
		$Sprite.flip_h = true
	velocity.x = lerp(velocity.x, 0, 0.1)
	fall()

func shoot():
	if can_attack:
		var direction = 1 if not $Sprite.flip_h else -1
		var bullet = BULLET.instance()
		bullet.direction = direction
		get_parent().add_child(bullet)
		bullet.position.x = position.x + 200 * direction
		bullet.position.y = position.y 
		$Reload.start()
		can_attack = false

func dash():
	if can_dash:
		var direction = 1 if not $Sprite.flip_h else -1
		velocity.x = SPEED * 6 * direction
		can_dash = false
		$"Dash CD".start()
		$AnimationPlayer.play("Dash")
	fall()

func jump():
	if Input.is_action_just_pressed("ui_up"): #and is_on_floor():
		velocity.y = JUMP

func fall():
	velocity.y = velocity.y + GRAVITY 
	velocity = move_and_slide(velocity, Vector2.UP)

func _on_Hurt_Box_area_entered(_area):
	stats.health -= 1

func _on_Stats_no_health():
	queue_free()

func _on_Reload_timeout():
	can_attack = true

func _on_Hurt_Box_body_entered(_body):
	stats.health -= 1


func _on_Dash_CD_timeout():
	can_dash = true