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

Example Input: Sentence1: looking for a train going to Cambridge. Sentence2: How about TR3350 that leaves at 05:17? Sentence3: you can book it. get me the reference number too Sentence4: I am leaving on Sunday and need to arrive by 13:00 Sentence5: Thank you for using our services. Sentence6: Thank you that is all I needed. Sentence7: W8YHJKSV is the reference number Sentence8: What day and time are you wanting to travel? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I would recommend the cherry hinton water play on the east. It is also free admission. Sentence2: The duration is 163 mins.Do i need to book something for you? Sentence3: Thanks for the park info. In review, I don't see a train ID departing from Cambridge after 10:45. Do you have it? Sentence4: You're very welcome. Good day. Sentence5: I can help! What day are you looking to travel? Sentence6: I do not have a preference on a side of town. Sentence7: I need to leave on Thursday. Sentence8: I am looking for a park, can you help me with that? Sentence9: It is 163 minutes Sentence10: Okay Could I have their telephone number please? Sentence11: The phone number is 01223336265. Sentence12: Can you also tell me about some parks that I could visit? Sentence13: Their address is cherry hinton hall, cherry hinton road. Is there anything else I can help you with today? Sentence14: May I suggest cherry hinton water play, since it will be warm out. It's located in the east. Sentence15: I'm looking for a train going to Birmingham New Street. Sentence16: Is there an area you prefer? Sentence17: We've got about 19 trains for that route. Do you have a certain time you want to leave after or arrive by? Sentence18: Thanks. Can you please give me its address? Sentence19: Yes i'd also like parks I can go to. Sentence20: I think that is all I need today. Thank you for your help. Sentence21: I want to leave on Saturday and leave after 10:45. Could you give me the travel time? Sentence22: We have 5 great parks in town. My favorite is the Botanic Gardens in the center. It's well worth the 4-pound entrance fee. Sentence23: TR5669 leaves Cambridge at 11:01 and arrives at birmingham new street at 13:44. May I help with anything else? Sentence24: Sorry, how long is the travel time on the train? Question: Who has spoken the sentence 19? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: It is a museum located in the centre. Admission is free. Sentence2: What is the address? Sentence3: Your reference number is WFZTQIKD . Sentence4: I have booked your taxi. You'll be expecting a grey lexus. The contact number is 07863326057. Sentence5: williams art and antiques is located at gwydir street, no. 5 dale's brewery Sentence6: I would like to find a place called Williams Art and Antiques. Sentence7: Thank you. Can you also tell me about a restaurant called riverside brasserie? Sentence8: I would like you to book for 8 people on 14:30 on sunday Sentence9: The Riverside Brasserie serves modern european cuisine in the Centre area of town, it is moderately priced. I would be happy to give you more information or book a table? Sentence10: Thank you. I'll also need a taxi to go from Williams Art and Antiques to the restaurant. I need to be there by 14:30. Sentence11: I certainly can. That's a museum in the centre, with free admission. Sentence12: Thank you, goodbye, have a nice day Sentence13: Can you get me information on a placed called williams art and antiques? Sentence14: Enjoy your trip! Thanks for booking through us. Question: Who has spoken the sentence 12? (A) User (B) System
Example Output:
Answer: (A) User