options: f : oh , doctor , i have all the books for class . so , i do n't have to go to the bookstore and tomorrow i can go to the clinic . f : so , you mean you have no dentist appointment and we can go today , right , my classmate ? f : ok. we can go tomorrow to buy the books . since we are classmates , we can go together . f : okay . my dear customer . since you have a dentist appointment tomorrow , i think you can pay the book today .
article: m : do you have all the books we need for class yet , mary ? f : no . i still have 2 more to buy . would you like to go to the bookstore with me , either today after class or tomorrow ? m : i ca n't today . i have a dentist appointment , but let 's go tomorrow .