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

Sentence1: Thank you. Could you please get me the phone number? Sentence2: Yes, I was wondering what the location is of Addenbrookes Hospital. Sentence3: no, that's all thanks Sentence4: That hospital is located on Hills Rd, Cambridge. Sentence5: Happy to help. Feel free to call back if any additional questions come up. Have a good day. Sentence6: The main hospital phone number is 01223245151. Were you looking for a specific department? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: I do not care about the area but I would like it to be expensive. Sentence2: How about the Gonville Hotel which is centrally located? It has internet and is expensive. Sentence3: I found 5 hotels matching your request. I would recommend Huntingdon Marriott Hotel located in the west. It has a 4 star rating. Sentence4: Will you be needing a reference number? Sentence5: On what day will you be checking in? Sentence6: 4 people will be staying Sentence7: I also need a place to stay? Sentence8: Your table will be reserved for 15 minutes. Your reference number is GDZZ5T1Y . Can I assist you further? Sentence9: That is all, thanks. Sentence10: Booking was successful. Reference number is : M6FRXJOV . Sentence11: I have many to choose from. Do you have a preference for internet or parking? Sentence12: Alright! How many people will be staying starting what day? Sentence13: There are 11 European style restaurants. What price ranges are you looking for? Sentence14: Yes, I would like it to have internet. Sentence15: That sounds perfect. Let's book it. Sentence16: There are 33 hotels to choose from. Can we narrow this down? Are you interested in a particular part of town or specific price range? Sentence17: Expensive price range. Please book it for 4 people at 18:15 on Monday Sentence18: Can you help me find some european food in Cambridge? Sentence19: How about price range? The hotel should also be very expensive. I won't settle for less and neither will Fi-Fi. Sentence20: I will be staying on Monday. Sentence21: Yes I will definitely need that. Sentence22: Great. If you need help in the future, please contact us. Enjoy your stay. Question: Who has spoken the sentence 16? (A) User (B) System
Answer: (A) User

Sentence1: am looking for a train. The train should leave on monday and should depart from cambridge. Sentence2: That is all for now. Thank you so much for the information. Sentence3: You're quite welcome. Have a safe trip. Goodbye. Sentence4: There are many trains available. Do you have a specific day or time in mind? Sentence5: I'd just like the travel time and train ID for that one please. Sentence6: 12:21 and time is 105 minutes. May I hemp with anything else ? Sentence7: Yes, can you please tell me the train ID that departs at 12:21? Sentence8: My apologies, the ID is TR4096 and the duration is 105 minutes. Is there anything else that I can help you with? Sentence9: I would like to travel on Monday after 12:00. Sentence10: I want to go to leicester. Sentence11: The next train after 12:00 leaves at 12:21. Would you like to purchase tickets for that train or is there anything else I can help you with? Sentence12: What is your destination? Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User