You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: It looks like there are hourly trains starting at 5:09. Did you have a particular day and time in mind? Sentence2: Thanks for the help. Sentence3: Will you train arriving at 07:54 work ok for you? Sentence4: Yes I need it booked for 2 people please. Sentence5: Unfortunately, there are no other Italian restaurants in the east. Would you like me to find you one in another area? Sentence6: Is the pizza hut in the moderate price range? Sentence7: I've successfully booked 2 tickets for you, the reference number is 9FE8N16G . Sentence8: I am looking for an Italian restaurant in the east. Sentence9: Pizza hut fen ditton matches your description. Sentence10: I guess it'll have to do. Can you book us a table for 2 on Wednesday at 14:00 please? Sentence11: Uh, no pizza hut's please. Something more classy please. Sentence12: Absolutely! To start, let me get more details. What are your desired departure and arrival cities? Sentence13: Thanks so much! Can you help me with train tickets too? Sentence14: Yes, it is. Should I book it for you? Sentence15: Yes, I'd like to book the train for Wednesday and I want to arrive in Cambridge by 08:30. Sentence16: Booking was successful. The table will be reserved for 15 minutes.Reference number is : H4BTTI6P . Sentence17: The train should go to cambridge and should depart from leicester. Sentence18: Have a great day! Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: No I have nothing in particular in mind. Sentence2: Thanks. I am also looking for somewhere to eat near the museum. I'd like to have Chinese food for dinner. Sentence3: Let's do a museum. Can you please send me the postcode, and phone number please. Sentence4: we can do Museum of archaelogy and anthropology, it is in university of cambridge, downing street. code number cb23dz. their phone number is 01223333516 Sentence5: There are 3 options. I recommend jinling noodle bar. Sentence6: Great, now can you also book a taxi for me? I need to make sure I get to the restaurant from the museum in time for that reservation. Sentence7: Booking completed! The car type is a black honda and the contact number is 07016630526. Can I help with anything else today? Sentence8: Thank you and enjoy the city! Sentence9: What time would you like? Sentence10: Thanks, that's it for now! Have a good day! Sentence11: There is lots to see in the centre. Were you looking for a certain type? Sentence12: Booking was successful. The table will be reserved for 15 minutes. Your Reference number is : YNWUFRQ4 . Sentence13: A moderate price range would be best. Sentence14: There are 10 Chinese restaurants in the centre. What is your price range, please? Sentence15: Would you be interested in architecture, a museum, or perhaps theatre? Sentence16: I'd like to find an interesting attraction in the city center. Sentence17: I would like to reserve it for 11:15 for 8 people. Sentence18: That sounds interesting. Can I get reservations for Thursday? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example 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
Example Output:
Answer: (B) System