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

Ex Input:
Sentence1: The post code is cb23dz. Sentence2: I need to arrive at 17:45. Sentence3: I will travel Tuesday. Sentence4: Thats perfect. What is the price and travel time on this train? Sentence5: I also need a train, to cambridge, I want to arrive by 17:45. Sentence6: There's a train that leaves at 13:17, want that one? Sentence7: What day do you need the train? Sentence8: Can I help you with anything else? Sentence9: Is there a time you need to leave or arrive by? Sentence10: It is 17.90 pounds and takes 60 minutes. Would you like me to book this for you? Sentence11: No thanks, just gathering information, that is all I need. Sentence12: That is all I needed today. Sentence13: Could you please provide me with the postcode. Thank you! Sentence14: As long as it arrives in Cambridge by 17:45 and departs from Broxbourne that will work. Sentence15: Glad I could help come backk if you need anything else Sentence16: I am looking for information about the museum of archaeology and anthropology. Sentence17: I have one arriving at 7:32 will this work for you? Sentence18: That museum is located over at University of Cambridge, downing street. It's free to visit. Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: I have your taxi booked. Look for a blue volkswagen, contact number 07655267463. Is there anything else I can help you with? Sentence2: I need to book a place to stay with a star of 4. I don't need free parking. Sentence3: Can you please provide me with the address, telephone number and the cost of admission. Sentence4: Thank you. Enjoy your stay Sentence5: I now need a taxi to get to the church from the hotel. I would like to leave the hotel by 15:45. Can you book that for me? Sentence6: I don't care about location, just would like a moderate price with 4 stars please. Sentence7: We have 44 attractions in the centre of town Broughton House Gallery is a museum we have available. Sentence8: We have 11 in the moderate range. They are all a guesthouse accommodation. Would you like one of these? Sentence9: I need one with free wi-fi. Sentence10: I have you booked. The reference number is WPGQ4ADJ . Sentence11: After that I'm also going to need the reference number. Sentence12: OK, now can you tell me about some of the attractions in the center of town? Sentence13: I would also need to book it for 4 nights. Sentence14: No, that is all. Thanks so much. Bye. Sentence15: One person, and I'd like to arrive on Tuesday. Sentence16: We have over 20 fine hotels. Do you have any preferences of cost or location? Sentence17: How long do you want to stay? Sentence18: Can i book one on tuesday? Sentence19: OK, let me see what I can do. Sentence20: How about All Saint's Church at 01223452587 in the centre? It's free. Sentence21: before I look for that, could you let me know how many people are staying and what day you'd like to arrive? Sentence22: I have two: a and b guesthouse in the east and avalon in the north. Would one of these work for you? Question: Who has spoken the sentence 18? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I'd like to make a reservation at Pizza Express Fen Ditton. Sentence2: I would like to stay somewhere near the restaurant. Sentence3: I wouls also need a taxi Sentence4: We will be eating at 14:30 on Wednesday. I need the reservation to be for 7 people. Sentence5: Thank you, enjoy your stay! Sentence6: There are two hotels available. Do you have a preference between 0 or 4 stars? Sentence7: Yes I am looking for a moderately priced Italian restaurant. Sentence8: book for 7 people for 5 days from wednesday Sentence9: I want it to take me from Alexander B&B to Pizza Express Fen Ditton to get me there by 14:30. Sentence10: I can do that. When will you be eating? Sentence11: Prezzo is a moderately priced italian restaurant in the west part of town. Would you like to go there? Sentence12: I would be happy to book your taxi. I need the travel time, departure location and arrival destination please. Sentence13: Alexander bed and breakfast is the 4 star rated place. Sentence14: thanks! that will be all for today. Sentence15: Yes, I am also looking for a place to stay. I prefer a guesthouse. Sentence16: Booking was successful. Reference number is : 62UNRH8C . Sentence17: Your taxi is booked. Be expecting a yellow Volkswagen. Please call 07236965666 should you need to reach them. Sentence18: Yes, it has both wifi and parking. Would you like to book a room? Sentence19: I need something in the centre part of town. What do you have? Sentence20: I have two options to choose from. Pizza Express and Pizza Express Fen Ditton are both in the centre of town. Sentence21: 3 stars will be fine thank you Sentence22: I have booked you a reservation at Pizza Express Fen Ditton for 7 people on Wednesday at 14:30. Your reference number is 4DVILHUV . Do you need anything else? Sentence23: What area would you like to stay in? Sentence24: Does it have free wifi? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User