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

Example Input: Sentence1: Your booking was successful! Your reference number is EV4ADBI9 . Sentence2: I need it for Sunday. Sentence3: Yes. Let's book it. Sentence4: I would like it to be in the west. It doesn't matter if it has free parking or not. Thank you! Sentence5: There are four three star guest houses. Is there an area of town that interests you the most? Sentence6: Train TR3154 leaves cambridge at 13:06 and will arrive at peterborough at 13:56 on Monday. Would you like me to book a ticket? Sentence7: I am looking to stay at a guesthouse that has a 3 star rating. Sentence8: ok for how long and how many people please Sentence9: I want a train that goes to peterborough and leaves after 13:00 Sentence10: Does it leave on Monday? Sentence11: There is the hobsons house. Would you like me to book it? Sentence12: For 3 days and 2 people,I need a confirmation number too Sentence13: and what day do you need the reservation for? Sentence14: The next train is the TR0545 leaving cambridge at 13:06. Would you like me to book it or more information? Question: Who has spoken the sentence 12? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I have 2 guest house.One is in the moderate price range and the other is cheap. Would you like to book one of these? Sentence2: There are no expensive hotels with 4 stars in the south with free parking? I'll take cheap if there aren't, but I need the address and phone number, please. Sentence3: I am looking for a hotel with a 4 star rating and price no more then 125 a night. Sentence4: Can you give me the phone number for Primavera? Sentence5: Primavera is in the centre at 10 King s parade. Admission is free. Can I get you a train or taxi as well? Sentence6: That sounds fine. Can you provide the phone number and address? And, is that considered a hotel or a guesthouse? Sentence7: Certainly! Phone number is 01223357708. Would you be interested in any restaurants or hotels while there? Sentence8: I am looking for a place to go in the centre of town. Sentence9: I have about 44 attractions to choose from in the centre. Can you tell me what type of attraction you are looking for? Sentence10: Yes, I would like to find a place to stay in the south with free parking. Could you help me? Sentence11: It is a guesthouse and the address is 53 roseford road. The phone number is cb22ha. Sentence12: Can you just choose one for me and give me the phone number? Sentence13: Please tell me your price range and hotel star rating preference. Sentence14: I'm sorry, can you provide that phone number again? I got a post code. Sentence15: I have rosa's bed and breakfast. It is in the south and cheap with 4 stars. Sentence16: I have 11 museums in the centre of town. They are all free. Do you have a type of museum in mind? Sentence17: The phone number for rosa's bed and breakfast is 01223512596 Sentence18: Maybe a museum would be nice. I am not sure. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes please make that reservation for me Sentence2: I need it for 8 people at 10:30 on saturday Sentence3: I was unable to find any moderately priced Polynesian restaurants. Sentence4: Booking was successful for a table at la tasca. The table will be reserved for 15 minutes, reference number is : 3TR0F2B1 . Can I help with anything else? Sentence5: I have several trains that will suit you. What is your destination and what time could you like to leave? Sentence6: TR8933 will be departing cambridge at 13:36 and arriving in norwich at 14:55. Would you like to book this? Sentence7: I will need some more information before making a reservation. What day would you like it on and for how many people? Sentence8: La Tasca is a centrally located, moderately priced, Spanish restaurant. Would you like to make a reservation? Sentence9: I am looking for a Saturday train departing from Cambridge. Sentence10: Please book for 8 people. Sentence11: How then about Spanish or a pub that serves tapas? Sentence12: Norwich is my destination and I want to leave after 13:00. Sentence13: No, I don't need anything else Sentence14: Alright the book was successful, the total fee is going to be 112.64 GBP payable at the station and the reference number is 28O28GIJ . Sentence15: Thanks! I'm also wondering if there are any moderately priced polynesian restaurants around. Sentence16: Have a great day! Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System