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

Example Input: Sentence1: I am sorry there is nothing that meets that criteria. Is there another type of food or area you would be interested in? Sentence2: Thanks, will you please book a table for 7 people on thursday at 13:00? Sentence3: I'm looking for a restaurant in the east. Sentence4: How about British food? Sentence5: There are nine restaurants in the east. Do you have a price range in mind? Sentence6: You are welcome. Enjoy your dinner! Sentence7: Booking was unsuccessful. can we book another day or time slot? Sentence8: Nope, that should be everything. Thank you so much for all of your help. Sentence9: Booking was successful for Thursday at 1200hrs , table for 7 at Grafton Hotel restaurant. Your Reference number is KQKTCX5Y . Is there anything else I can help you with? Sentence10: I would recommend you try Grafton Hotel Restaurant. As requested it is in the east and serves British food. Sentence11: I don't have a price range but I am looking for asian oriental cuisine. Is that possible? Sentence12: please try booking at 1200hrs and get me the reference number Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: i am sorry. i have double checked and still do not find anything matching your criteria. would you like a different star rating? Sentence2: I can help with that. What kind of price range do you have in mind? Sentence3: there are a variety of good things in the north it depends on what you want i will find whatever you request Sentence4: There doesn't appear to be a 4 star hotel with wifi in the north. Can I interest you in a lower star rating? Sentence5: i need a hotel with wifi in the north part of town Sentence6: Perhaps there is a guestroom? Sentence7: No but would you like to try another location ? Sentence8: No, the hotel needs to have a 4 star rating. Can you please check your system again? Thanks Sentence9: I am open as far as price range, but I would love a 4 star place. Sentence10: No I need the north. Is there anything else available in the north? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I am looking for one on the east side. However I need a indian restaurant not chinese. Sentence2: I want to leave the restaurant by 1:15. Sentence3: No thank you that is all. Sentence4: Preferably in the east. Would like the phone number. Also looking for colleges to visit and need to book a taxi for 1:15. I will need the number and car type. Sentence5: Your booking is completed. A black skoda will be picking you up, their contact number is 07824442963. Can I help with anything else today? Sentence6: At what time would you like to leave the restaurant? Sentence7: Can you tell me the address to a Chinese restaurant in Cambridge? Sentence8: any price range is ok. I am also looking for places to go in town. The attraction should be in the type of college Sentence9: There are several Chinese restaurants in town. Which specific part of town are you interested in? Sentence10: There are Indian restaurants in the centre, south, east, north, and west. Do you have an area preference? Sentence11: Sounds good. Could you give me an idea of colleges I can visit whilst in Cambridge? Sentence12: Okay, how about curry prince? It is moderately priced and located in the east. Their phone number is 01223566388 Sentence13: Sorry about that. I have 4 Indian restaurants on the east side. Do you have a price range you'd like to stay within? Sentence14: sure there's corpus christi, located in the centre and clare hall which is in the west. Sentence15: i do not have a place by your description. can we change location? Sentence16: Sure, let's do Corpus Christi. Could you get me a taxi from the restaurant to the college? Sentence17: If you need anything else, please call us back. Have a great trip to Cambridge! Goodbye. Sentence18: Price doesn't matter. What restaurant do you recommend? Sentence19: Let's actually find an Indian restaurant first. What areas of town have indian places? Sentence20: I can help with all of those but first let's find a restaurant for you. Do you have a price range? There's 2 moderate and 2 expensive restaurants. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output:
Answer: (A) User