human
You cross your heart and hope to die you'll go straight to Bertha's and give her the key?
gpt
Cross my heart. Hope die. And you'll give me six candies and a rocking-horse, and a 'lectric light and a house for my pigeons, and--
human
I'll give you something nice when you've done the errand, not before. Now hurry. The library can't open till you get there. Think of it! All those people who want books waiting for you!