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

Ex Input:
Sentence1: Thank you for confirming that. One more detail: Did you have a particular time period in mind for your trip? Sentence2: I would like to travel on a Saturday. Sentence3: Yes. I want to arrive in Cambridge by 21:30. Sentence4: The Ruskin Gallery is a museum. Do you need anything else? Sentence5: There are numerous places in the Centre, can you tell me what type if place or activity you would like to do and maybe we can narrow it down? Sentence6: The Cambridge University Botanic Gardens are 4 pounds, and the Regency and Ruskin Galleries are free. Sentence7: The address for the regency gallery is 39 fitzroy street and the phone number is 01223365454. For ruskin gallery it's anglia ruskin university, east road, their number is 01245493131. Sentence8: I am looking for a train leaving broxbourne. Sentence9: The centre, please. Sentence10: I should have confirmed that I am indeed going to Cambridge. Sentence11: I need a place to go in town. Sentence12: I'm afraid we don't have a zoo, although if you like plants there is the Cambridge University Botanic Gardens. There are several galleries, such as Regency Gallery and Ruskin Gallery. Sentence13: You are welcome. Have a nice day. Goodbye. Sentence14: That will be all, thank you for your help. Sentence15: No I don't need to book a seat, but can you tell me the departure time. Sentence16: Please, I need the address and phone number for the Regency and Ruskin Galleries. Thanks. Sentence17: TR7846 will get you into Cambridge by 10:32. Would you like me to book a seat on that for you? Sentence18: I can help with that! Your destination will be cambridge I presume, what day would you like to travel? Sentence19: Yes I want to travel on a Saturday. Sentence20: Of course. The departure time for that train is 09:32 with an arrival time of 10:32. It's a 60 minute ride. Anything else I can help with? Sentence21: How about a zoo or art gallery? Sentence22: Where is your destination located? Sentence23: Are there entrance fees to these places? Sentence24: One more thing. Would you confirm the attraction type for the regency gallery and ruskin gallery? Sentence25: There are hourly trains from 5:32 onward. Did you have a particular time of day in mind? Sentence26: Did you have a specific place or area in mind? Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Thats all for today! Thanks so much! Sentence2: TR1039 departs from Ely at 13:35, arriving in Cambridge by 13:52. Does this work for you? Sentence3: Sounds great, can you book it for 7 people for 4 nights starting saturday? Sentence4: The location doesn't matter, but I'd like it to be 4 stars. Sentence5: Thank you I also need to find a cheap guesthouse to stay at. Can you help me find one? Sentence6: Hi, I'm looking for a train going to Ely from Cambridge. Sentence7: Have a nice day. Sentence8: Okay! How about Allenbell? Sentence9: That sounds great. I would like to book it for 7 people. I will also need the reference number Sentence10: You have 9 options available. Would you like to narrow it down by location? Sentence11: Your room has been booked. Your reference number is ELA3CIDM . Sentence12: There are 70 possible trips. You can leave as early as 5:35 and as late as 23:35. The trip is 17 minutes. What time of day would you prefer? Sentence13: I need to leave on Wednesday after 12:00 please. Sentence14: Booking was successful, the total fee is 35.2 GBP payable at the station .Reference number is : JD1P380X . Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Please tell me their phone number and address Sentence2: Glad I could help. Sentence3: I want to arrive by 18:30. Sentence4: Wandlebury Country Park is located at Wandlebury Ring, Gog Magog Hills, Babraham and their phone number is 01223243830. Can I assist you further? Sentence5: Can you help me find a park in the south? Sentence6: I'm travelling from Ely to Cambridge on Tuesday and need help finding a train. Sentence7: There are two parks in the south. They are both free. I recommend wandlebury country park. Can I help with anything more today? Sentence8: Great! How many seats will you need? Sentence9: thank you and enjoy your stay in Cambridge! Sentence10: Just me please Sentence11: Your booking was successful, the total fee is 4.4GBP payable at the station. Reference number is : FCO2L8AN. May I assist with anything else? Sentence12: I have several options available is there a time you would like to depart? Sentence13: That is all I need today. Thank you for your help. Sentence14: I don't have a departure preference. Sentence15: We have trains running that route every two hours beginning at 5:35. Do you have a preferred departure or arrival time? Sentence16: Thanks again for all of your help Sentence17: Train ID TR6971 is 4.40 pounds Should I book it Sentence18: Yes, and please give me the ref. number. Question: Who has spoken the sentence 15? (A) User (B) System

Ex Output:

Answer: (B) System