The context of the following conversation is Robin went with Jan's friends to school and was unaware Jan was planning a surprise party for later.:
Jan says I can't believe we pulled it off. I was so afraid my friends were going to spill the beans..
The friend responds It's not easy organizing a surprise party. How did you keep it a secret?.
Jan responds I just made sure all my friends knew not to say a word to Robin..
The friend responds It's good that you prepared. Didn't they all walk to school together this morning?.
Jan responds Yup. So I'm so glad that I made a point of saying something beforehand..
The friend responds That's great. Robin's lucky to have a friend like you..