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

Example Input: Sentence1: I am planning a trip in Cambridge and need a place to stay with free parking. Sentence2: Excellent. Can I book that for 2 people for 2 nights starting on Tuesday Sentence3: I have many different options available. Let me ask, do you have a certain price range or area in mind? Sentence4: Thanks i will find you one.Thanks a lot Sentence5: I have no particular price range, but would like a guesthouse in the north part of town. Sentence6: That narrows it down to about 9 different options. Most offer both free parking wifi. If you would like my personal recommendation, I would say go with the Hamilton Lodge. Sentence7: Booking was successful. Reference number is : 152UJWIK . anything else today? Sentence8: Yes, I need to find a train on Tuesday from Cambridge to London Liverpool Street. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Can I get some information about visiting Great Saint Mary's Church? Sentence2: Thanks. I am also looking for an expensive place to eat in the centre. Sentence3: Booking was successful. The table will be reserved for 15 minutes. Reference number is : XWZ8N8GF . Anything else I can do? Sentence4: Sure, there are plenty of places in the area. Did you have a particular type of cuisine in mind? Sentence5: Sure, is there anything specific you'd like to know? Sentence6: What is the entrance fee for that attraction? Sentence7: This is found in the center of town. Their phone number is 01223350914 and their postcode is cb23pq. Sentence8: Admission to Great Saint Mary's Church is 2 pounds. Sentence9: Definitely, Please book me for 7 people at 14:45 on wednesday. I also would like the reference number. Sentence10: No, just expensive in the centre. Recommend one for me. Sentence11: Thanks! That's all I needed. Sentence12: I'd really like to visit Great Saint Mary's Church. Could you give me some information about it? Sentence13: You should try dining at kymmoy, an asian oriental restaurant located at 52 Mill Road City Centre. Would you be interested in booking a table? Sentence14: You're welcome! Have a wonderful day. Question: Who has spoken the sentence 12? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: How long is the train ride? Sentence2: I need a train to Broxbourne, leaving after 09:15 Sentence3: I would like to depart from cambridge on friday Sentence4: There are 98 trains, do you have a departure location and day? Sentence5: What time will I arrive? Sentence6: It will be 60 minutes. Sentence7: Thank you! That's all I needed. Sentence8: Booking was successful, the total fee is 17.89 GBP payable at the station. Reference number is : 7E3M8V02 . Is there anything else I can help with? Sentence9: The booked for 1 person TR0826 leaves at 10:01 and arrives by 11:01. Sentence10: All right, then. Have a nice trip, and a nice day. Goodbye. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System