Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: how about italian? Sentence2: I am also looking for a hotel in the same area of the restaurant Sentence3: Are there any restaurants that serve bistro food? Sentence4: Yea! Please book a table for 2 people at 15:00 on Thursday. Sentence5: Does it have free parking? Sentence6: Sure, there are two such restaurants. How about Pizza Express, at Regent Street City Centre? Would you like to book a table? Sentence7: The Gonville Hotel is in the expensive range but is located in the Centre. Sentence8: Hello, I am traveling to Cambridge and I'm looking for some local restaurants. I would like to find some located in the Centre and of moderate price. Sentence9: That sounds great. Can you provide the contact number for the taxi? Sentence10: That's all. Thanks. Sentence11: Can you try 14:00? Sentence12: Yes it does! Shall I book that hotel for you? Sentence13: I don't really care about price range, but I'd like to have free parking. Sentence14: I have you booked leaving at 13:45 and arriving at 14:00. Your car is a black audi. Sentence15: That time is not available, would you like to book another day or time slot? Sentence16: Thank you as well and have a wonderful day! Sentence17: Your Booking was successful.Your Reference number is : K9JGOOGY . Sentence18: There are no bistro style places that meet your criteria, would you like another style of food perhaps? Sentence19: Can I also book a taxi to get from the restaurant to the hotel? We want to make our dinner reservation. Sentence20: I have several options. Do you prefer a certain price range so that we can narrow down the options? Sentence21: We have a lot of locations to chose from. What type of food would you like? Sentence22: Please. Book it for 2 people on thursday, for 3 days. I'll need the reference number for that as well. Sentence23: Yes I was able to make you a reservation at the pizza express on thursday at 14:00 for 2 people. Your reference number is UN9ONONE . Sentence24: Certainly, the number is 07937202537. Is there anything else I can help you with? Question: Who has spoken the sentence 12? (A) User (B) System
A:
Answer: (A) User