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

Sentence1: I would actually like to book it for 8 people, not 3. Sentence2: Could you reserve the one in the centre of town for 3 nights starting Monday? There will be 3 of us. Sentence3: You're welcome. Glad to help! bye bye! Sentence4: Sure no problem. So the hotel is huntingdon marriott hotel and your reference number for the booking is 34BAQ2WK . Is there anything else I can help? Sentence5: I am looking for a hotel in the expensive price range. Sentence6: Unfortunately, I wasn't able to book you for the day and time you wanted. Would another day or time be alright? Sentence7: No, it doesn't matter. I would like a 4 star hotel with free parking though. Sentence8: That's great. I'm all set , thank you! Sentence9: There are 5 expensive hotels available. Did you have a preference as to area of the hotel? Sentence10: There are two, one in the west and one the centre of town. Sentence11: I couldn't book that one either. Would you like to change your criteria? Sentence12: Okay, could you try the other one, please? Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: Can I get a taxi to take us from the gallery to the restaurant? Sentence2: I'm looking for a museum with a restaurant. Sentence3: Yes please. I need the reference number too. Sentence4: Do you know of any restaurants in the centre of town that serve lebanese food? Sentence5: Yes I'd like one for Sunday for 19:15, there will be 8 of us. Sentence6: Great. Please get me their address. Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : H570Z3KN . do you have any other questions Sentence8: Is it moderately priced? Sentence9: Yes. Ali Baba is moderately priced. Would you like me to make a reservation for you? Sentence10: No, that will be all thank you. Sentence11: Ali Baba is in the centre of town serving lebanese food Sentence12: Ok, a white audi will pick you up at cafe jello gallery and bring you to Ali baba by 19:15. You can contact the driver at 07646811518. Anything else? Sentence13: will you need to have all eight of you seated at the same table? Sentence14: How does the Cafe Jello Gallery sound? It is located in the west and does not have an entrance fee. Sentence15: You're welcome. Thank you. Sentence16: Cafe jello gallery can be found at 13 magdalene street. Is there anything else I can do for you? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: No, that is it. Thank you. Sentence2: What is the price range for the hotel? Sentence3: I am looking for a north indian food restaurant in the town centre. Sentence4: Unfortunately there are no expensive North Indian restaurants. Sentence5: Finches Bed and Breakfast is a cheap 4-star guesthouse on the west side. Its postcode is cb30nd. Can I help you with anything else today? Sentence6: I'm sorry, there are no North Indian restaurants in the centre area. Would you like to check a different area? Sentence7: Have we fulfilled all of your requests today? Sentence8: Thank you. Can you give me a reference number? Also, I need to book a 4 star guesthouse. Sentence9: How does the Curry Garden sound? Sentence10: Your reference number is FNEQ6E1A . And alright, any other preferences regarding the guesthouse? Sentence11: I need it to include free wifi. Sentence12: There are 18 guesthouses matching your criteria. What area and price range would you prefer? Sentence13: That sounds good. Please book for 2 people at 11:45 on Saturday. Sentence14: Thanks, booking has been completed. Sentence15: You're very welcome, enjoy your visit! Sentence16: Finches Bed and Breakfast is a cheap guesthouse. Do you need anything more? Sentence17: I trust your opinion, just please let me know the price range and postcode. Sentence18: What about expensive restaurants? Sentence19: What about a restaurant that serves just indian food? Sentence20: No thank you. You have been very helpful. Question: Who has spoken the sentence 4? (A) User (B) System

Answer: (A) User