You know you want to eat out tonight and you know what time you want to eat. The problem is deciding where to eat. Siri can help you with that.
If you tell Siri, "Make me a dinner reservation for four tonight at 8 p.m.," Siri will pull up a list of a list of restaurants in your area that have openings for four at that time sorted based on Yelp ratings, thus simplifying your choices and making it easier for everyone to agree on a restaurant.
Once a dining spot has been chosen, just tap on the one you want to reserve and Siri will make the reservation for you. You will need to have the free Open Table app in order for Siri to complete the reservation for you. Otherwise you will have to call the restaurant and complete the reservation yourself. Although I'm sure Siri will help you with the dialing if you ask.