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

Input: Consider Input: Sentence1: Yes, where would you like to go to? Sentence2: Is there an area you'd prefer to stay in? Sentence3: Yes, book that one please. Sentence4: No free parking is not necessary. Sentence5: I prefer a moderate price one. Sentence6: Your room is reserved, ref# UCVH6QPU . Is there anything else I can help you with today? Sentence7: Would you help me book a train for Thursday, please? Sentence8: Can I get the reference number for that booking? Sentence9: There are over 200 trains going to Cambridge on Thursday. Where will you be departing from? Sentence10: Your booking was successful. Your reference number is Z3NAOPSY . Sentence11: Is that for 2 people? And I need it for 5 nights starting thursday. Sentence12: I would like a cheaper hotel. Sentence13: I would like to go to Cambridge Sentence14: That narrows us down to about 19 trains. Do you have a time you would like to leave after or arrive by? Sentence15: Ok I Am going to book a cheaper hotel for you ,have a good day,thank you. Sentence16: There is nothing in the price range you mentioned. Would you be willing to stay at a cheap hotel or an expensive hotel? Sentence17: Not that's it. Thank you so much! Sentence18: In the east. With free wifi, please. Sentence19: Do you need free parking? Sentence20: I would like to leave after 15:45. Sentence21: Yes, please. I am also looking for a place to stay, ideally a hotel with a 4 star rating in the moderate price range. Sentence22: Then in that case, I recommend the TR0209 which departs from Kings Lynn at 16:11 and gets into Cambridge at 16:58. Would you like me to book it for you? Sentence23: I'm sorry, let's get your hotel choice fixed first. There is one cheap hotel - The Cambridge Belfry. It has free internet and parking. Can I book this one for you? Sentence24: I found 3 guesthouses matching that criteria, I would recommend the Carolina Bed and Breakfast. Located in the east, 4 stars, and has free wifi. Will this one work? Sentence25: I will be leaving from Kings Lynn. Sentence26: Ok. Thank you for choosing Cambridge Towninfo Centre. We hope you enjoy your stay. Question: Who has spoken the sentence 13? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: I'd like to find some place to go on the east side of town. Sentence2: Thank you. Have a good day, goodbye. Sentence3: I can certainly suggest something for you. I have 10 options. Do you prefer an entertainment venue, or perhaps a museum or park, etc? Sentence4: Sounds great. That's all I needed. Thank you! Sentence5: I would prefer just anything in the east, can you give me the address and attraction type of one? Sentence6: No problem. How does the Funky Fun House sound? It is standard entertainment and it is located at 8 mercers row, mercers row industrial estate. Question: Who has spoken the sentence 2? (A) User (B) System

Output: Answer: (A) User


Input: Consider Input: Sentence1: The Alpha Milton Guest House is of moderate price and located in the north cambridge area. Sentence2: The Hamilton Lodge happens to be moderately priced and offers free wifi and parking, would you like me to book this hotel for you? Sentence3: I want a hotel that's in the moderate price range. Sentence4: The phone number is 01223350688. Is there anything else that I can do for you? Sentence5: Your booking was successful and your reference number is BOBT5BLT . Is there anything else I can help you with? Sentence6: I can book you at the Hamilton lodge if you would like. Sentence7: I would like it also to be in the north and moderately priced. Sentence8: Yes, please book this. Sentence9: Can you help me find a 3-star hotel in the north of Cambridge? Sentence10: Great can you book it for 2 people for 4 nights starting thursday? Sentence11: I don't need it booked. I just require the phone number. Thank you. Sentence12: That is everything I needed for today. Thanks! Sentence13: You're welcome! You have a great day! Sentence14: There are 17 Chinese restaurants. Is there a particular price range or area you'd like? Sentence15: What date, time, and party size would you like to book? Sentence16: As long as it is a hotel and not any other type, then yes book it for me. Sentence17: I can recommend Golden Wok, would you like me to book a reservation there for you? Sentence18: Yes. I also need to find a restaurant that serves chinese food. Question: Who has spoken the sentence 7? (A) User (B) System


Output: Answer: (B) System