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: Of course, when would you like your reservation to be and for how many people? Sentence2: Do you have a area preference? Sentence3: No that will be all. Sentence4: Excellent, I have booked you a table for 6 at 17:00. Tables are reserved for 15 minutes. The reference number is RI11SSDU . Sentence5: Does it have free wifi? Sentence6: Acorn guest house matches your requirements, would you like to book there? Sentence7: Do you need anything else? Sentence8: What are my choices for a moderate hotel? I don't need free parking. Sentence9: The hotel does have internet. Sentence10: I have results for 18 moderately priced places, what area are you looking to stay in? Sentence11: Great can I get their address, phone number, and postcode? Sentence12: I would like to make a reservation at Hotel Du Vin and Bistro. Sentence13: I have 2 European and 2 Modern European. Do you have a preference? Sentence14: Thank you for contacting Cambridge TownInfo Centre, enjoy you hotel stay and your dinner! Sentence15: I would like the restaurant to be in the Centre and serve European food. Sentence16: The acorn guest house is located at 154 chesterton road, postcode cb41da and the phone number is 01223353888. Sentence17: Yes, in the centre. Sentence18: Six people on Wednesday, at 17:00 Sentence19: Thank you so much for all your help! Sentence20: I am also looking for a restaurant. The restaurant should be in the same price range as the hotel and should serve European food. Sentence21: No particular area, I need a hotel with a 4 star rating. Sentence22: There are 2 to choose from: Hotel Du Vin and Bistro, and Galleria, and there are 2 others that are similar, but serve modern european. Do any of these sound good? Question: Who has spoken the sentence 10? (A) User (B) System

Output: Answer: (A) User

Input: Consider Input: Sentence1: The address is 41 Warkworth Street. Can I help you with anything else today? Sentence2: Yes, I'm looking for a guesthouse with a star rating of 1. It should be in the city centre please. Sentence3: Enjoy your trip. Sentence4: Hi! I'm looking for someplace to go in the centre. Sentence5: No that was all I needed. Thank you, goodbye. Sentence6: I don't have any guesthouses that meet that criteria. Would you like me to try something else? Sentence7: Do you have any guesthouses with a star rating of zero? Sentence8: You are booked for a yellow audi. Your contact number is 07526986404. May I help you with anything else? Sentence9: What is your departure site? Sentence10: No not right now. What is their address? Sentence11: I'm sorry, we need a taxi departing from Saint Mary's Church by 3:15 going to the guesthouse. Sentence12: Yes, I do have one. The El Shaddai is in the centre and is cheap. It is 0 star rated and offers free parking and wifi. Do you need a room? Sentence13: It does not really matter can you suggest one? Sentence14: how about little saint mary's church? Sentence15: Okay, there's plenty to do in the city's centre. What kind of attraction are you interested in? Sentence16: I also need a taxi to get to little saint mary's church by 3:15. Sentence17: It is an architecture attraction it's located on little saint mary's lane postcode cb21qy. Is there anything else I can help you with? Sentence18: Sounds perfect. Is it architectural? Also, can I have the address with postcode? Question: Who has spoken the sentence 16? (A) User (B) System

Output: Answer: (A) User

Input: Consider Input: Sentence1: It was at 17:00, quite a bit before 18:45. Would you prefer a later booking? Sentence2: Yeah, the entrance fee is 5 pounds, and the postcode is cb23na. Sentence3: I am sorry but there are no multiple sports in the centre area. Do you want me to try a different area or a different attraction? Sentence4: Okay. You'll be expecting a blue Ford. Their number is 07043795737. Anything else? Sentence5: When would you like to be picked up? Sentence6: I think that would work. Can you tell me their entrance fee and postcode please? Sentence7: No thanks, but can you book me for 3 people and 5 nights starting on saturday? I'll also need the reference number. Sentence8: How about let's try a nightclub? Sentence9: Im looking for a place to go in the centre area with multiple sports. Sentence10: Was that taxi booking for leaving by 18:45? Sentence11: I just need to arrive at my attraction by 18:45. Can I get the car type and contact number please? Sentence12: It's a blue ford and the contact number is 07043795737. Sentence13: Thank you for using the help desk! Good bye! Sentence14: Hello, I'm looking for a hotel named cityroomz. Can you provide me information about it please? Sentence15: at 17:00 hours please Sentence16: I booked it for you. The reference is L30FIVE7 . Do you need anything else? Sentence17: Yes. It's a 0 star hotel that's located at sleeperz hotel, station road in the centre of town. Would you like their phone number as well? Sentence18: Can you book me a taxi between the two locations please? Sentence19: Thanks for your help! Sentence20: Yes I found 5 nightclubs. Would like to try the Ballare located at Heidelberg Gardens, Lion yard? Question: Who has spoken the sentence 10? (A) User (B) System
Output: Answer: (A) User