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

Example Input: Sentence1: How about Italian food instead and could I have the phone number if you find a restaurant Sentence2: There are no matching restaurants. Would you like me to perform another search? Sentence3: Prezzo is a moderately priced Italian restaurant in the west side of town. The phone number is 01799 521260. Sentence4: Thank you, goodbye. Sentence5: West side of town. Sentence6: Thank you good bye Sentence7: I want a restaurant with corsica food please. Sentence8: What is the area you would like? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: No, surprise me. I will need the address and the area, though. Sentence2: I'll need one from leicester to cambridge on saturday, leaving after 16:30 Sentence3: No thanks, that will be all. Sentence4: Is there anything else I can help you with today? Sentence5: I don't need a reservation, I just need the address and the area. Sentence6: Alright. Thanks for using our service and have a nice day. Goodbye. Sentence7: It is the centre area and its address is Free School Lane City Centre Sentence8: Good afternoon! I'd like to visit an expensive european restaurant. Will you help me find one? Sentence9: Okay. Thank you. Sentence10: The train arrives at 18:54 and costs 30.24 pounds. Sentence11: Eraina is a very nice restaurant in the centre. How many in your party? And what day and time should I make your reservation for? Sentence12: What time does it arrive and the price? Sentence13: Where would you like to depart and arrive? Sentence14: Yes there are 5 restaurants that meet your requirements. Do you have a part of town or type of food you prefer? Sentence15: Great,I also need information on getting a train. Sentence16: I have a train for you that leaves at 17:09. Would you like me to book it? Question: Who has spoken the sentence 14? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Yes, I would like it to be in the south and in the moderate range please. Sentence2: Great! Lets go with aylesbray lodge guest house. Would you like me to book that for you? Sentence3: No thank you. Could I get the postcode please? Sentence4: Yes, that would be great. I would be happy with either of those options. Sentence5: That is all for now, thanks . Sentence6: I have two options. The Aylesbray Lodge Guest House and the Bridge Guest House. Both offer free wifi and parking. Can I help arrange a room for you? Sentence7: There are 21 guesthouses with free parking. Is there a particular area or price range you'd like to look at? Sentence8: Yes, it's cb17sr. Sentence9: So, I need a guesthouse with free parking. Sentence10: You are welcome. Bye. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output:
Answer: (A) User