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

Ex 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

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: I'm going to saint johns chop house. Sentence2: What is your destination? Sentence3: The contact number is 07727071722. Is there anything else I can help you with? Sentence4: I can help you with that. When do you need to leave? Sentence5: No that is all Thank you goodbye. Sentence6: I need the contact number please. Sentence7: Your taxi is booked. Look for a yellow Volkswagen. Sentence8: Please call us anytime. Good Bye. Sentence9: I need to get a taxi out of holy trinity church. Sentence10: I need to arrive at the chop house by 22:30. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: I am traveling between the two places. I need to leave the restaurant by 23:15. Sentence2: All saints church is architectural and located in the centre of town. Sentence3: Charlie Chan is a cheap chinese restaurant in the centre of town. Would you like more information or to book a table? Sentence4: You're all set! Your car will be a red tesla and their contact number is 07799680227 should you need to contact them! Sentence5: Nah, that's not necessary. I just need the postcode, please. Sentence6: Thank you for all your help! That will be all for today! Sentence7: I've just double checked. Cambridge doesn't have any Polynesian restaurants at all. Can I look for something else for you? Sentence8: I also want a moderately priced Polynesian restaurant. Sentence9: Sure. The All Saints Church is located at jesus lane. Sentence10: I was hoping you can help me find a place to go that has to do with architecture. Sentence11: How about chinese food? Sentence12: You're welcome, have a great day! Sentence13: That would be fine. Can I get the address please? Sentence14: Certainly! What are your departure and arrival destinations and when would you like to leave or arrive by? Sentence15: Could you check again? Sentence16: I also need a taxi. Sentence17: The post code is CB21DB for Charlie Chan's. May I assist you any further? Sentence18: I am sorry but there are no moderately priced Polynesian restaurants. Would you like a different type of food or price range? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System