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

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
Answer: (B) System

Sentence1: It is free admission into the King's college. Sure I can help with that. What is your price range? Sentence2: There is pizza express it's moderately priced, would you like more information or for me to book it for you? Sentence3: That was all I needed, thank you. Sentence4: I was able to book your table. The Reference number is : WA5JKA4G . Is there anything else you needed? Sentence5: Yes. Do you know what their entrance fee is? Also, I need some help finding an Italian restaurant in the centre area. Sentence6: I don't have a price range preference. Sentence7: Thank you! Sentence8: I also need a taxi to travel between King's College and the restaurant. Sentence9: Yes please. I would like the reservation for Thursday at 15:00 for 2 people. Sentence10: I am looking for King's College. Sentence11: May I help you with any thing else? Sentence12: thanks for using our services and welcome anytime Sentence13: Booking completed! Booked car type : blue tesla Contact number : 07982639539 Sentence14: Yes, King's College is in the centre and located on King's Parade. Their phone number is 01223331100. Question: Who has spoken the sentence 8? (A) User (B) System
Answer: (A) User

Sentence1: It doesn't look like we have any expensive 4 star guesthouses. There are some which are moderate if you are interested. Sentence2: I would like to check in on saturday. We would need 4 nights for 8 people. Sentence3: Hi. I am looking for a hotel that is a guesthouse that has free parking. Can you help me find one? Sentence4: Yes, can I get the phone number and address for the Cambridge and County Folk Museum? Sentence5: I have booked you at the archway house. The reference number is 61O3SUCK . Can I help you with anything else? Sentence6: I have booked you. Thank you. Goodbye. Sentence7: The Archway House is very nice. Would you like me to book a reservation? Sentence8: The phone number for the cambridge and county folk museum is 01223355159, and the address is 2-3 castle street. Anything else? Sentence9: Yes and can i get the reference number? Sentence10: Moderate will do. Can you give me more information please? Sentence11: Sure, how about an expensive, four star guest house? Sentence12: There are 21 options available. Do you have any other preferences to narrow down the search? Sentence13: No, that will be all. Sentence14: What day would you like to check in at the guesthouse? Question: Who has spoken the sentence 9? (A) User (B) System

Answer: (B) System