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 sorry can I help you with anything else? Sentence2: Booking completed! Booked car type blue honda Contact number 07444279931 Sentence3: Can you help me book a taxi? Sentence4: What is your destination? Sentence5: I need to leave the attraction by 15:15 and arrive at the hotel. Sentence6: No thank you. That is all. Sentence7: No preference. You pick. Sentence8: Definitely - Cambridge has many guesthouses. Is there a particular area or price range you had in mind? Sentence9: Thank you. I'm also looking for a place to go in the centre. I'll need the postcode for the attraction. Sentence10: Hi, can you help me find a guesthouse to stay at? Sentence11: You're welcome, glad I could help. Sentence12: Yes please for 2 nights starting from Sunday for 4 people. I will need a reference number. Sentence13: There are many places in the centre of town. Do you have any further preferences or would you like me to recommend one? Sentence14: I do not have a price range in mind. Sentence15: old schools is my favourite. can i give you the details? Sentence16: Your reservation for 4 at alexander bed and breakfast this Sunday for 3 days 2 nights was successful. Your Reference number is : 1FDBJB3A . Sentence17: Thank you very much. Sentence18: Thanks you have a nice day as well. Sentence19: Have a nice day. Sentence20: Sure, I will work on booking that for you. Sentence21: Alexander bed and breakfast comes highly recommended. It is located in the centre area and has a cheap price range, shall I book there for you? Sentence22: That is all I needed thank you for your time. Sentence23: Ok, I have booked you a yellow volvo, contact number 07291792842, is there anything else you need? Sentence24: I do not have a preference. Sentence25: Do you have a price range? Sentence26: Yes I need their postcode. Sentence27: Old Schools postcode is cb21tt. Will there be anything else? Sentence28: Did you get the reference number yet??? Question: Who has spoken the sentence 26? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Booked car type : white toyota Contact number : 07264671188 All set. What else can I help with today? Sentence2: looking for places to go in town and be in the South Sentence3: Yes, please book it. Sentence4: Thank you. I'd also like to book a taxi. I need to leave the hotel by 10:15. Sentence5: When will you start your stay? Sentence6: What's the entrance fee? Sentence7: What type of attraction are you looking for? Sentence8: The attraction should be in the south. Sentence9: I think I got everything I need thanks to you! Sentence10: Unfortunately, Nusha has not provided any information on entrance fees. I can seek other options, if you'd like. Sentence11: I need it for Thursday night, for four nights, for 4 people. I'll also need a taxi by 10:15. I need the car type and contact number please. Sentence12: Booking was successful. Reference number is : Y3CFU8WN . Sentence13: There is a hotel called Cityroomz in centre located at Sleeperz Hotel, station road. Would you like me to book it for you? Sentence14: how about nusha? it's located in the south. Sentence15: then find me a particular hotel called cityroomz Sentence16: Well, you are very welcome. I hope you have a great time! Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: There are 3 hotels in the west. Two are cheap and one is expensive. Do you have a price preference? Sentence2: please find me a good cinema to go Sentence3: There are 2. Would you like to stay in a guesthouse, or in a hotel? Sentence4: They have a very flexible schedule. Please give me a day of the week and I will look for you. Sentence5: for how many days and starting when do i book? Sentence6: Let's go with the cheap one. Sentence7: The cambridge belfry is in the cheap range, with 4 star rating has internet and parking. Should I book a room for you? Sentence8: One person, please. Sentence9: Can I have the postcode and phone number? Sentence10: Yes, that would be wonderful. Sentence11: A hotel would be perfect! Sentence12: What is the price range? Sentence13: how many people should i book for? Sentence14: I don't actually need to book a room right now, can you just give me the price range that is in? Sentence15: What days are available? Sentence16: We have 21 hotels and guesthouses ranked 4 stars. Do you have a particular area of the city you'd like to stay in? Sentence17: I would like something in the west. It doesn't need to have internet. Sentence18: Sure. The postcode is CB11PS and the phone number is 08712240240. Sentence19: Ok. So that is the cambridge belfry. Should I make a reservation for you? Sentence20: As I mentioned before, the Cambridge Belfry is in the cheap range. Will there be anything else for you today? Sentence21: I'm also looking for a place to stay in. Can you find me a 4 star place? Sentence22: what about vue cinema? It's located in the centre. Sentence23: For 1 day Sentence24: No. I believe that is all. Thank you for your assistance. Sentence25: Thank you for allowing me to assist you. Feel free to call back for more information. Sentence26: What day would you like to check in? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output:
Answer: (A) User