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

Ex Input:
Sentence1: No thank you. I do need help finding places to go in town. I'm looking for entertainment in the centre of town. Sentence2: The Alexander bed and breakfast is located in the centre. The phone number is 01223525725. Sentence3: Okay! Just to clarify, from where will you be departing? Sentence4: the address is 56 saint barnabas road Sentence5: what's their address? Sentence6: There are several available. Do you have a preference on if there is a fee or free? Sentence7: I dont see any entertainment in the center of town. Could I try a different area for you? Sentence8: I'd like to stay in a good part of town. Can you please give me the phone number? Sentence9: Okay, how about 2 stars? It does need to include free parking. Sentence10: Great! I have booked a taxi for you. The car will be a yellow audi, and the contact number is 07663388074. Can I help with anything else? Sentence11: ashley hotel is a nice 2 star hotel. Sentence12: Okay, christ's college is free admission. Sentence13: How about a college instead? Sentence14: There are actually no 1-star accommodations anywhere in Cambridge. Sentence15: It is a guesthouse. Want me to book it? Sentence16: Free would be preferable. I also need a taxi. Sentence17: I need a place to stay in Cambridge. It should be either a hotel or guesthouse with 1 star and moderate price range. Can you help me with that? Sentence18: What hotel type is that? Sentence19: I would also like to book a taxi to and from the hotel that leaves by 13:30. Sentence20: I am so sorry. I don't know where my head has been. I need to leave the hotel by 13:30, going to Christ's College. Sentence21: At 4 stars you have many options. What part of town would you like to stay in? Sentence22: you have been of great help thank you Sentence23: How about a hotel with 4 stars instead? Sentence24: I am glad. thanks you too. Question: Who has spoken the sentence 23? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Which one includes free parking? I don't need internet included. Sentence2: Does Finches Bed and Breakfast have free wifi? Since they both have free parking, I might as well go with the cheaper price. Sentence3: Both of them have free parking. Sentence4: Certainly! What time of day would you like to travel, and what are your departure and arrival locations? Sentence5: Good news! Booking was successful. Reference number is : G3504UR7 . Sentence6: Yes that would be perfect! Can I please get it for 3 people, 4 nights and We'll be there by Wednesday Sentence7: That train leaves at 11:11. Travel time is 47 minutes. Sentence8: There are two guesthouses on the west side: Finches Bed and Breakfast, with a cheap price point, and Hobsons House, with a moderate price point. Would you be interested in either of these? Sentence9: Thank you very much for your help. Sentence10: No, I just need the departure time. How long of a trip is it? Sentence11: I need to book a guesthouse in the west of cambridge, are there any? Sentence12: Yes, they have internet as well. Would you like to book this room for you? Sentence13: If you need help with anything else, please don't hesitate to contact us. Enjoy your travels. Sentence14: Will be leaving Cambridge & going to Kings Lynn. Wanted to arrive by 12:00. Sentence15: Sure, TR8704 arrives at 11:58, can I book a seat for you? Sentence16: Fantastic, I'd also like a train leaving on Sunday, please. Question: Who has spoken the sentence 12? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: TR2854 leaves at 12:21 would that work for you? Sentence2: Do you have any trains to leicester for Wednesday? Sentence3: I'd recommend milton country park on milton country park, milton, cb46az. Their phone number is 01223420060. Will that be all? Sentence4: Perfect. I'll need 8 tickets. Sentence5: Yes, I think that's all I needed. Have a good day. Goodbye. Sentence6: No, any you recommend will be fine. I'll just need a phone number, postcode and address, please? Sentence7: I have 5 different parks in town. Did you have a certain area of town you prefer? Sentence8: Yes, there are 19 trains running to Leicester on Wednesday, the first at 5:21 and then every hour thereafter. Would you like more specific information, or to book some tickets? Sentence9: I will be departing from Cambridge after 12:15.. Sentence10: Booking was successful, the total fee is 302.39 GBP payable at the station . Reference number is : J3I2TFTK . Sentence11: Thank you for using our service today! Sentence12: Are there any nice parks in town? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:

Answer: (B) System