Load_dataset did not load the text file?

Beginners
1 
from datasets import load_dataset

dataset = load_dataset('text',data_files='/content/chatbot.txt')

why is the inside of my dataset is like this and when I use dataset[0] like the docs it give me key error '0' instead?

DatasetDict({
    train: Dataset({
        features: ['text'],
        num_rows: 72842
    })
})

Please help thanks