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

Example Input: Sentence1: yes, it is perfect Sentence2: Alright, there about 30 or so hotels that would work. Did you prefer a certain area or price range? Sentence3: It's booked. Reference number is 6JC8SK3S . Your taxi will arrive at 11 it's a red skoda with contact number 07950328037 Sentence4: The guesthouse has 4 stars. The address is 154 chesteron road. The phone number is 01223353888. Would you like for me to book it? Sentence5: I am looking for a place with free parking, Internet is not required. Sentence6: There really isn't any particular star rating I'm interested in. Sentence7: Thank you. Will it take more than 15 minutes to get from the hotel to the restaurant? Sentence8: How does the copper kettle sound? It is moderately priced in town centre and serves british food. Can I reserve a table for you? Sentence9: I'll book the hotel myself, but I would like a restaurant reservation. Someplace moderately priced in the center of town. Sentence10: May I suggest the Acorn Guest House? It's moderately-priced in the north. Sentence11: There are 21 moderately priced restaurants near the centre. Do you have a type of cuisine in mind? Sentence12: There will be 8 of us and I am also looking for a moderate priced restaurant in the center for 11:15 on Saturday. Please send me the reference number. Sentence13: Not really, but a moderate priced restaurant in the centre would be ideal. Sentence14: alright, that narrowed the results down to 21 guesthouses. is there a star rating you are particularly interested in? Sentence15: No. I believe that will be everything. Thank you. Sentence16: Thank you and please contact us again if you have any questions. Sentence17: Please tell me its star rating, phone number and address. Sentence18: What day will you be arriving? I also need to know how many people there will be and how long you will be staying. Sentence19: That's fine. Could you book a table for 8 people at 11:15. I need a reference number. I also need a taxi between both places arriving at the booked time. Sentence20: I don't really have an area or price range in mind at the moment, but I am looking for a place that's a guesthouse. Sentence21: Let's get your hotel booked first. I will need to know how many days you'd like to stay and what day you want to begin your stay please. Sentence22: No, your departure is at 11:00 and you will arive by 11:15. Is there anything else I can assist with you today? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes I would. Sentence2: The phone number is 01223312112. Do you need the postcode? Sentence3: You're welcome, and you have a nice day as well! Sentence4: Can you tell me anything about cafe jello gallery? Sentence5: I think that could work please make a booking for 6 people Sentence6: There are 10 trains that day. Is there a particular time you'd like to leave or arrive? Sentence7: i would like to arrive after 2:00 in the afternoon. Sentence8: Yes, the Cafe Jello Gallery is a museum located at 13 magdalene street in the west side of town. Would you also like their phone number? Sentence9: Booking was successful! Your reference number is GXIE5O8F . You have to pay 26.4 GBP at the station. Sentence10: No, but I am looking for a train from Ely on Thursday. Sentence11: Thank you very much that is all I needed. Have a good day. Sentence12: We have the TR0813 that arrives at 11:52 on thursday. Does that work? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The one in the centre is fine, I would like a table for 1 at 14:15 friday please. Sentence2: No thanks. Instead, could you tell me where to get Thai food? Sentence3: Unfortunately, I don't have any places that serve tea that are expensive. Did you want me to try a different price range or type of cuisine served? Sentence4: I found two Thai restaurants one is in the west and one in centre. Which would you prefer? Sentence5: Thank you for contacting us. Have a good trip to cambridge. Sentence6: Your table is booked for Friday at 14:15 for 1 person. The reference number is KSS0DI7C . It is only reserved for 15 minutes so please arrive on time. Sentence7: Thank you very much. That is all I'll need today! Sentence8: For how many people? Sentence9: It is an expensive restaurant yes Sentence10: Great can I reserve that for 1 person at 14:15 on friday please? Sentence11: I am looking for a place to eat at that is expensive and serves food with afternoon tea. Sentence12: Can you make sure that's an expensive restaurant? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output:
Answer: (A) User