Two word pair in dictionary failing to return in text based game school project

Question

When i enter a room, i am prompted with an item to be picked up and added to my inventory, when i enter a room with a one word item, i can pick it up no problem, but when i go into a room with a two word item, i cannot pick it up and add it to my inventory. I feel like i'm missing something obvious, but i can't figure it out, i've been on this for a while and finally have folded and am asking for help.

def display_instructions():
    print("++++++++++++++++++++")
    print("You are a village witch doctor and an villager is sick. "
          "Collect the ingredients for a potion to cure the sick villager")
    print("++++++++++++++++++++")
    print("Use go North, go South, go East, go South to navigate "
          "different sections of the forest. Use get, with item name after to pick up item.")
    print("++++++++++++++++++++")


def display_room(room, items):
    print("You are in the " + room + ".")
    if len(items) > 0:
        print("In this room, you see the following items: ")
        for item in items:
            print("- " + item)
    else:
        print("There are no items in this room.")
        print("++++++++++++++++++++")


def display_inventory(inventory):
    if len(inventory) > 0:
        print("Your inventory contains the following items: ")
        for item in inventory:
            print("- " + item)
    else:
        print("Your inventory is empty.")


def get_input():
    return input("What would you like to do? ")


def play_game():
    rooms = {
        "House": {"North": "North Forest", "South": "South Forest"},
        "North Forest": {"East": "NE Forest", "South": "House"},
        "NE Forest": {"East": "North River", "West": "North Forest"},
        "North River": {"South": "Central River", "West": "NE Forest"},
        "Central River": {"South": "South River", "North": "North River"},
        "South River": {"North": "Central River", "West": "SE Forest"},
        "SE Forest": {"West": "South Forest", "East": "South River"},
        "South Forest": {"North": "House", "East": "SE Forest"}
    }

    items = {
        "Lilyroot": "North River",
        "Pinecone": "North Forest",
        "Nest Wax": "NE Forest",
        "Feather": "South Forest",
        "Green Mushroom": "South River",
        "Bee Nectar": "SE Forest"
    }

    current_room = "House"
    inventory = []

    display_instructions()

    while True:
        display_room(current_room, [item for item, room in items.items() if room == current_room])
        display_inventory(inventory)

        user_input = get_input()
        command_parts = user_input.lower().split()

        if command_parts[0] == "go":
            if len(command_parts) == 2:
                direction = command_parts[1].capitalize()
                if direction in rooms[current_room]:
                    current_room = rooms[current_room][direction]
                else:
                    print("Invalid Direction.")
                    print("++++++++++++++++++++")
            else:
                print("Invalid command. Please enter 'go [direction]'.")
# Here
        elif command_parts[0] == "get":
            if len(command_parts) == 2:
                item_name = command_parts[1].capitalize()
            elif len(command_parts) == 3:
                item_name = command_parts[2].capitalize()
                if item_name in items and items[item_name] == current_room:
                    inventory.append(item_name)
                    print("You got " + item_name + "!")
                    del items[item_name]
                else:
                    print("Incorrect Item Name")
            else:
                print("Invalid command. Please enter 'get [item name]'.")
        else:
            print("Invalid command. Please enter 'go [direction]' or 'get [item name]'.")

        if current_room == "House" and (len(items) == 0):
            print("The potion can now be crafted, the villager is saved!!!!")


if __name__ == "__main__":
    play_game()