"You read that book" - This is a simple statement about the action of reading a book. It's past tense, meaning the reading has already happened.
"You have to book" - This means you need to make a reservation, usually for something like a flight, hotel, or restaurant. It implies a future action, something you need to do.
The difference lies in the verb:
* Read refers to the action of absorbing information from a book.
* Book refers to making a reservation or securing something in advance.
Example:
Imagine someone is discussing a travel plan. They might say:
* *"You read that book about Italy? I think I should book a flight there!"*
Here, "read" is about the past action of gaining information about Italy, while "book" is about the future action of securing a flight.