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

Ex Input:
Sentence1: I'm sorry, I only know that it is moderately priced. Can I book a room for you? Sentence2: What is the price range? Sentence3: Is there a particular area of the city where you'd like to stay? Sentence4: No that's all. Thanks! Sentence5: Yes. There are a number of hotels with wifi. Archway House is one of them that I can recommend. Sentence6: You have a nice day. Good bye. Sentence7: Howdy! I'm in town for the night and need a place to stay. I'd like a four star joint with free parking, if you please. Sentence8: no that's fine. Sentence9: Nice! I hope you enjoy this beautiful city, I found 5 hotels for you. What is your price range? Sentence10: Is there anything else you will need today? Sentence11: Archway house is in the moderate price range. They are located at: 52 gilbert road. Anythign else you need? Sentence12: I have 16 guesthouses that are 4 star and have parking, do you have any other requirements to help narrow the search? Sentence13: I don't have a price range. As long as it's nice. Sentence14: Sure, what is its address and price range? Sentence15: Do any of those have free wifi? Sentence16: No, I don't care about the area, either. But do you have a guesthouse? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I'm sorry can I help you with anything else? Sentence2: Booking completed! Booked car type blue honda Contact number 07444279931 Sentence3: Can you help me book a taxi? Sentence4: What is your destination? Sentence5: I need to leave the attraction by 15:15 and arrive at the hotel. Sentence6: No thank you. That is all. Sentence7: No preference. You pick. Sentence8: Definitely - Cambridge has many guesthouses. Is there a particular area or price range you had in mind? Sentence9: Thank you. I'm also looking for a place to go in the centre. I'll need the postcode for the attraction. Sentence10: Hi, can you help me find a guesthouse to stay at? Sentence11: You're welcome, glad I could help. Sentence12: Yes please for 2 nights starting from Sunday for 4 people. I will need a reference number. Sentence13: There are many places in the centre of town. Do you have any further preferences or would you like me to recommend one? Sentence14: I do not have a price range in mind. Sentence15: old schools is my favourite. can i give you the details? Sentence16: Your reservation for 4 at alexander bed and breakfast this Sunday for 3 days 2 nights was successful. Your Reference number is : 1FDBJB3A . Sentence17: Thank you very much. Sentence18: Thanks you have a nice day as well. Sentence19: Have a nice day. Sentence20: Sure, I will work on booking that for you. Sentence21: Alexander bed and breakfast comes highly recommended. It is located in the centre area and has a cheap price range, shall I book there for you? Sentence22: That is all I needed thank you for your time. Sentence23: Ok, I have booked you a yellow volvo, contact number 07291792842, is there anything else you need? Sentence24: I do not have a preference. Sentence25: Do you have a price range? Sentence26: Yes I need their postcode. Sentence27: Old Schools postcode is cb21tt. Will there be anything else? Sentence28: Did you get the reference number yet??? Question: Who has spoken the sentence 26? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Jinling Noodle Bar and phone is 01223566188 Sentence2: Yes, please. Just go ahead and make a booking with your recommendation. I'll need a table on Sunday at 11:45. It will be 8 people. Sentence3: I would like to eat Chinese food, please. Sentence4: We have 21. What sort of cuisine would you like? Sentence5: I am also looking for some where fun to go in the Centre of town as well. Sentence6: Is there anything else I can assist you with? Sentence7: Can you find a moderate price restaurant in the centre? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 9VDXYHIH . Sentence9: No that would be fine. Thank you. Sentence10: Thee are 5 places in the centre that people visit for their architecture - would that be fun for you? For example, you could go to see holy trinity church for free. Sentence11: No thank you. You have been a great help. Sentence12: There are three moderately priced Chinese restaurants in the Centre. Would you like me to recommend one? Sentence13: That sounds great. Could I get the phone number and post code please? Sentence14: OK, could you maybe tell me which restaurant the reservation is at? Sentence15: Thank you for using our services. Sentence16: Yes, holy trinity church can be reached at 01223355397 and the postcode is cb23nz Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System