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

Example Input: Sentence1: Two for the same day. I need a taxi to commute between the two places to be sure it arrives by the booked time. The contact number and car type? Sentence2: I was able to book your table. Your reference number is : OSAGFN8W . Sentence3: Yes, that is correct. Is there anything else I can help you with? Sentence4: i am looking for information in Cambridge. A a place to dine. Sentence5: How many people will be staying with you and what day would you like to reserve your hotel room? Sentence6: book the one in the centre a table for 2 at 13:45 on thursday Sentence7: which side of town and what is the price range? Sentence8: There are 21 great places to choose from. Do you have a certain type of restaurant you are looking for? Perhaps Italian or European? Sentence9: Thank you. I will also need a hotel in that same area. Please, no guesthouses! Sentence10: Cityroomz has a 0 star rating with free internet, but does not provide parking. Would you like to make a reservation? Sentence11: I have the hotel and the taxi already? Sentence12: Yes, please. For 2 nights. Sentence13: you too have a great day Sentence14: Thanks, Those are all i need for today. Sentence15: Thank you so much. Sentence16: Let me know about your Italian restaurants. Sentence17: I want to eat Thai food. Sentence18: There are 3 options for hotels in the centre. There is one 0 star, one 3 star and one 4 star option. Which would you prefer? Sentence19: Your room is booked, ref #DOSETWFU, and a red Audi will pick you up and get you to the restaurant for that reservation. Contact number 07840525996. Sentence20: There aren't any Thai restaurants in that price range in the centre of town. Would you like to try something else? Sentence21: Moderately priced, in the centre of town. Sentence22: I want the place with 0 stars. Sentence23: You're welcome. Have a great day. Sentence24: Okay, I found two options for you: Pizza Express and Pizza Express Fen Ditton. Do either of those appeal to you? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Could you look again for places that serve North American food in the West. Sentence2: I have 4 trains that meet your needs. Would you like to book tickets? Sentence3: Great! I also need to have some north american food in the west part of town. Sentence4: I am looking for information in Cambridge. Sentence5: Booking was successful, the total fee is 8.8 GBP payable at the station . Reference number is : 8BUQLIK8 . Sentence6: Great that was all I needed today, thank you Sentence7: How about an intalian restaurnat in the west area? Sentence8: You are booked the reference number is 3ICEL34F, can I help with anything else? Sentence9: I have two. One is moderately priced, and one is cheap. Do you have a preference? Sentence10: I'm sorry, we don't have any north american restaurants in the west area. Would you like to try a different type of food? Sentence11: What type of information are you looking for? I can helpp with dining, hotels and entertainment. Sentence12: You're very welcome! Have a great day. Sentence13: The moderately priced one will be fine. I'll need it booked for the same day, same people, and at 10:15. Sentence14: book for 2 people and get me the reference number Sentence15: The only north american restaurant in the city is in the centre. Would you like more information about that? Sentence16: I need a train on friday going to ely from cambridge arrival by 13:00 Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Find me a train that leaves after 11:00 on Wednesday Sentence2: No problem! Have a great day. Sentence3: Great thanks. That's all I need. Sentence4: Yes please. I need the travel time. Sentence5: I would like the address and phone number. Sentence6: Located at 98 king street. Number is 01223314960. Sentence7: No, I think you've answered all my questions. Thank you! Sentence8: The Broughton House Gallery is a free museum located in the centre. Would you like more information about it? Sentence9: Not right now, thanks. I would like to go to a museum while I'm in town, though. Sentence10: I'll be leaving cambridge with a destination of stevenage. Sentence11: No, any area is fine. Can you suggest one? Sentence12: ok, and what is your destination? Sentence13: The earliest train after that time is TR3844. It departs at 11:21 and arrives in Stevenage at 12:10. Would that work for you or would you like a later train? Sentence14: It is a 49 minute ride, it will cost 12.80 pounds. Would you like me to make reservations for you? Sentence15: Were you looking for one in a particular area? Sentence16: Do you need me to look up info about another place or attraction? Anything? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System