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

Input: Consider 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

Output: Answer: (A) User

Input: Consider Input: Sentence1: You're very welcome. Thank you and goodbye! Sentence2: The earliest train departs Leicester at 05:09 and arrives in Cambridge at 06:54. The cost is 37.80 pounds per ticket. Sentence3: That's all that I need. Sentence4: Any of those will work. Which one is your favorite and where is it located? Sentence5: I'll be departing from Leicester, headed to Cambridge. What do the prices look like? Sentence6: No problem. There are a lot of other options like boating, cinema, colleges, a concerthall, museums, nightclubs, a park, theatres and swimming pools. What are your interests? Sentence7: I also need a train on Wednesday, arriving by 19:00. Sentence8: I'm looking for something to do in the centre of town. Sentence9: Travel time is approximately 105 minutes. Sentence10: Would you like any more information on other attractions? Sentence11: I would really like it to be a attraction type. Sentence12: What is the travel time? Sentence13: Great! I found a lot of things that match what you're looking for. Do you like architecture? Sentence14: I can help you with that. What are the departure and destination cities you were looking for? Sentence15: No, that will be all. Thank You for all your help. Sentence16: I'd try the cambridge contemporary art museum, at 6 trinity street. Question: Who has spoken the sentence 13? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Hello, I'm sight seeing in Cambridge and I'm looking for somewhere to eat on the westside. Sentence2: Any cuisine is fine, but I would like it to be in the moderate price range. Sentence3: Please book a table for 2 at 19:15 on Saturday with a reference number and l need a theatre in the same area as the restaurant. Sentence4: That's okay, can I get a taxi from cambridge arts theatre to Meghna by 19:15? Sentence5: Okay great. Enjoy your time in Cambridge and please let us know if there is anything else we can do to help! Sentence6: What is the entrance fee to the Cambridge Arts Theatre? Sentence7: That sounds great. Can I get the phone number? Sentence8: The phone number for the Cambridge Arts Theatre is 01223503333. Is there anything else I can help you with today? Sentence9: Your booking is complete! Your taxi will be a yellow ford. The contact number for your driver is 07755954404. Is there anything I else I can help you with? Sentence10: No, thank you. Sentence11: Ok, how about Meghna? It is a moderately priced Indian restaurant in the west side. Sentence12: I apologize but the entrance fee for the Cambridge Arts Theatre is unlisted. Would you like their phone number instead? Sentence13: Okay done I have booked you a table for two and your reservation number is 6X0OV3JV . I have many theaters in the same area. What about Cambridge Arts? Sentence14: There are 14 restaurants on the west side. Are you looking for a restaurant with a particular cuisine? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (B) System