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'm looking for a train that departs cambridge on saturday. Any ideas? Sentence2: I would like to leave after 16:30 and would like to go to kings lynn. Sentence3: Yes please and I'll also need the postcode. Sentence4: I am not showing any hotels with 1 star that have free parking, would you like to look for something else? Sentence5: We have three 4 star hotels that provide free internet and free parking. Is there an area you would prefer to stay at? Sentence6: the postcode is cb236bw. it is a hotel in the cheap price range. when would you like to stay from, how many people, and for how long? Sentence7: Alright, are there any 1 star hotels that offer free parking? Sentence8: There are 202 trains that leave Cambridge on Saturday. Sentence9: I recommend The Cambridge Belfry, a cheap 4-star hotel on the west side. Would you like to reserve a room? Sentence10: I'm interested in the earliest one. What is the train ID? Sentence11: Sorry, no, I do not see any one star hotels with free wifi. Would you like to try another option? Sentence12: That's the TR2840. Sentence13: That was all I needed. Thank you. Sentence14: Are there any with 4 stars? Sentence15: There are 7 trips that would work. The earliest leaves at 17:11 and the latest leaves at 23:11. The train ride will be 47 minutes. What would you prefer? Sentence16: The cambridge belfry is a hotel, not a guesthouse. May I help with something else? Sentence17: Does any of them have free wifi? Sentence18: You're welcome! Have a great day. Sentence19: I need the postcode, hotel type, and price range for The Cambridge Belfry. Sentence20: I need more information on the number of nights and people. Sentence21: Any place is fine, I go with whatever you recommend. Sentence22: Forget about booking it, just please tell me what type of hotel it is. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Hi, I'm looking for a 1 star place to stay with free wifi. Sentence2: Well, I'd like to book one. I don't think it matters which one. Sentence3: You are welcome, goodbye. Sentence4: There are 5 guesthouses with 4 star ratings in Cambridge with moderate to cheap price ranges. Would you like more information? Sentence5: Alright. I wanted a 1 star, but I guess I can listen to the 2 star options. Sentence6: Okay, how many people will be in your party? Sentence7: Hmm. What do you what about 4 star hotels? Sentence8: No, that is all. Thank you. Bye. Sentence9: What dates would you like to book the room for? Sentence10: I have 2 on the north side that are in the moderate price range and 1 on the east side in the expensive range. Would you like to book one. Sentence11: I need it for two nights starting on Saturday. Sentence12: It would be for 7 people. Sentence13: I'm sorry there are no 1 star hotels with internet, would you like me to search on 2 stars, we have a few hotels available. Sentence14: I have booked you at the A and B Guest House at 124 tenison road. The reference number is 0J08KUGQ . Can I help you with anything else? Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: There are 17 options. Is there a specific area that you would like to stay in? Sentence2: I need something in the moderate price range, preferably Eastern European food. Sentence3: Could I also get the car type please? Sentence4: Yes, let's try looking for an Italian restaurant please. Sentence5: No, that's everything I need, thank you for your help. Sentence6: Sure! I'd suggest the Avalon, a moderately priced guesthouse in the north with free wifi and 4 stars. How does that sound? Sentence7: I have booked it for you. Your reference number is UBTSOUBT . Is there anything else I could help you with today? Sentence8: Let's try a guesthouse, please. Sentence9: Can you just give me the postcode, phone number, and address? Sentence10: I have one in the south, moderate price, would you like to book that one? Sentence11: I need a taxi to commute to the restaurant and will need it until I leave at 02:15 and after, can you give me a contact number for the taxi and what car type? Sentence12: There are nine restaurants in the south. What is your price range or type of food you prefer? Sentence13: Oh, sure. Be looking for a grey Volvo to pick you up. Is there anything more I can assist you with? Sentence14: I also need a room, with wifi and in the moderate price range. Sentence15: The Avalon sounds lovely. Would you book it for 3 nights starting Friday for 4 people? Sentence16: Unfortunately, I don't have anything that meets those requirements. Can I try another type of cuisine? Sentence17: The pizza hut cherry hinton is at G4 Cambridge Leisure Park Clifton Way Cherry Hinton postcode cb17dy phone number 01223323737 Sentence18: You're very welcome. Feel free to come back if you have any other questions! Sentence19: The contact number for the taxi is 07992886663. Sentence20: Looking for place to eat in the south Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User