Answer:
This is the sentence in English
John is not here. You can call him later.
I personally think there should be a comma after the first sentence and lowercase the Y.
Step-by-step explanation:
John is not here, you can call him later.
In Spanish:
Juan no está aquí, puedes llamarlo más tarde.
There is a pause not an end. and it doesn't explain what happened so "John is not here." can't be a sentence
I hope this helps!