Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Okay great thanks so much. Sentence2: Wandlebury Country Park is in the South. It is very nice. There is also Cherry Hinton Water Play in the East. Do either of those sound suitable? Sentence3: Wandlebury country park is in the south area, postcode cb223ae and phone is 01223243830. Sentence4: What area of town will you be in? Sentence5: It is a public park. You can just walk through it without a booking. Sentence6: Where is the closest pizza joint? Sentence7: Wandlebery sounds good, can I get the phone number, area, and postcode? Sentence8: Thank you for using our services. Have we met all of your needs today? Sentence9: Can you book it for me? Sentence10: Is there anything else that I can help you with today? Sentence11: Sure thing. I just booked it. Your ref number is Q2JZ0UIL . Sentence12: Well, I'm wanting to visit a park as well. Let's find that first. Sentence13: I'd like to find something in the south. It also needs to have free parking. Sentence14: I am happy to book, but lets find you a place. Any preference on area? Are ratings or type of place a factor? Sentence15: I need a cheap hotel for 8 people 2 nights starting Tuesday please Sentence16: Rosa's bed and breakfast is a cheap guesthouse in the south. It has 4 stars and provides free wifi and parking. Does this sound OK to you? Sentence17: That is all. Thanks for your help today. Sentence18: Yes please. Can you please book it for 8 people for 2 nights starting on Tuesday? Sentence19: Thank you so much. Sentence20: You're welcome. Is there anything else I can do for you today? Question: Who has spoken the sentence 11? (A) User (B) System
Output:
Answer: (B) System