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

Input: Consider Input: Sentence1: Frankie and Bennys serves italian food in the expensive price range, and their postcode is cb17dy. Would you like assistance in making a reservation? Sentence2: Departure time doesn't matter, I just need to arrive at the stansted airport by 21:30 on Thursday, and I need to depart from Cambridge. Sentence3: When are you leaving? Sentence4: I don't need tickets at the moment, but I do need the price and train ID for that 19:40 departure, please. Sentence5: I need a train that leaves Cambridge on Thursday. Sentence6: There are 202 trains leaving Cambridge on Thursday. Would you like to narrow your search by destination and time? Sentence7: Can you tell me the postcode, food type, and the price range? Sentence8: The train id for that is TR9030 and the price is 10.10 pounds. Is there anything else you'd like help with today? Sentence9: I am going to the stansted airport and I need to arrive by 21:30. Sentence10: Yes, the 19:40 train will arrive at 20:08. How many tickets would you like? Sentence11: I'm also looking for a particular restaurant, it's called Frankie and Benny's. Sentence12: Thank you for contacting the Cambridge TownInfo centre. We're here any time you need to get around Cambridge! Sentence13: No, that's all I needed. Thank you. Sentence14: Can I please have one at 19:40. I will get there by 21:30 correct? Sentence15: I was able to find it, what information would you like on it? Sentence16: I have 16 train departures fitting your preferences. They leave every :40 of the hour starting at 5:40 to 20:40, would you like me to book one of these? Question: Who has spoken the sentence 10? (A) User (B) System

Output: Answer: (A) User

Input: Consider Input: Sentence1: I'd like to find a panasian restaurant in the centre of town please. Sentence2: Can I have the phone number, address and postcode? Sentence3: Tang Chinese is listed at expensive. Would you like more information? Sentence4: Yes, the address is Napier Street City Centre, the postcode is cb11hr, and the phone number is 01223357187. Sentence5: No, I don't care about the price. Which one looks good? Sentence6: That's all I needed today, thank you. Sentence7: Unfortunately, I was not able to locate a panasian restaurant in that area. Would you like me to look in another area or for a different type of restaurant? Sentence8: Great choice! We have 10 restaurants in that area. Do you have a preference on price? Sentence9: Oh no. Well I'll take chinese food then. Sentence10: Enjoy your meal, let me know if I can help with any thing else. Question: Who has spoken the sentence 9? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: How does acorn guest house sound? They're on 154 chesterton rd and you'd get free parking, too. Sentence2: I'm looking for a hotel, is that something you help with? Sentence3: We have five hotels that meet that criteria. Are you looking for one in a particular area? Sentence4: Are any of them guesthouses? I would prefer a guesthouse. Sentence5: Yes please, could you try finding me a guesthouse in a moderate price range? Sentence6: Thank you for contacting us, have a nice day. Sentence7: There are some in the north and one in the east. Does either option sound better? Sentence8: Done! Your reference number is 1CD4LZ9R . Do you need assistance with anything else today? Sentence9: moderately priced with a 4 star rating. For 4 people for 5 nights on thursday. Sentence10: I'm looking for somewhere classy and expensive, where they don't skimp on amenities like free wifi. Are there any like that? Sentence11: There are 33 hotels, is there a specific area you are looking for? Sentence12: Okay great! Can you please book a reservation for 4 people for 5 nights starting on Thursday? Sentence13: There are no expensive guest houses. Sentence14: No that was all I needed thanks so much for your help. Sentence15: It doesn't matter. Whichever one you think is best. Sentence16: Do you want a hotel in the north or east? Sentence17: I would settle for a moderate price ranged one. Sentence18: No, they're all hotels. Would you like me to try a different price range? Question: Who has spoken the sentence 16? (A) User (B) System
Output: Answer: (A) User