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

Sentence1: I leave on Tuesday and need to arrive by 11:30. Sentence2: I need a train that goes to Cambridge and departs from Bishops Stortford. Sentence3: I would recommend the lensfield hotel. It's a 3 star hotel in the south. Would you like more information or do you want to go ahead and book a room? Sentence4: The TR0635 leaves at 09:29, tickets cost 10.10 pounds and the duration of the journey is just 38 minutes. Would you like me to book you a seat? Sentence5: What time does the train depart? What is the price and total travel time? Sentence6: No but I also need a place to stay that should be in the expensive price range and should include free wifi. Sentence7: Nope, wherever you recommend will be great. THanks Sentence8: We have 5 hotels that meet your criteria. Is there a particular area of town you would like to stay in? Sentence9: Yes can you please do that for me? Sentence10: No, that will be all. Thank you! Sentence11: How many people should I book this for? What day? How many days will you be staying? Sentence12: ok, the booking was successful. Reference number is : N9Y9Q569 . can i help with anything else? Sentence13: Enjoy your stay. Sentence14: Book it for 8 people and 4 nights. We will be checking in on Thursday. Sentence15: What day will you be departing and time? Sentence16: Ok, the TR0635 arrives at 10:07. Question: Who has spoken the sentence 12? (A) User (B) System
Answer: (A) User

Sentence1: No, that's all I needed. Thank you for your help - goodbye! Sentence2: I will take the one that arrives at 15:08. can you make me a booking for 8 people on Wednesday? I will need a reference number. Sentence3: The train should depart from Cambridge on Wednesday and headed for Stansted Airport. It should arrive by 15:15. I would also like you to make a booking for 6 people. Sentence4: I'm looking for a train. Sentence5: I have two trains that would suit you. One arrives at 14:08 and the other at 15:08. Do you have a preference? Sentence6: I have 2,828 trains with different routes, to help narrow it down, where will you be departing/arriving, and what day/time? Sentence7: It was a pleasure to assist you. Please use us again for your future needs. Have a good day. Sentence8: Sure thing! I've booked the train for 8, and your reference number is I62H3VUY . Is there anything else I can do for you today? Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: Does it offer free wifi? Sentence2: The booking was successful. Your reference number is 81E1ITXC . Is there anything else I can help with today? Sentence3: How about free parking, does it have that as well? Sentence4: There is one option, it is The Lensfield Hotel. Do you want me to reserve any rooms for you? Sentence5: we appreciate you using our services. have a good day. Sentence6: I'm sorry, but there aren't any places that meet those qualifications. Would you like to try a different part of town? Sentence7: book it for 7 people and 3 nights starting from monday. Sentence8: Yes it also has free parking. Anything else today? Sentence9: Yes the Lensfield Hotel does have free wifi. Sentence10: I am looking for a high priced hotel in the north side of town Sentence11: How about an expensive hotel in the south side of town? Sentence12: No that is all I need. Thank you for your time. Question: Who has spoken the sentence 9? (A) User (B) System

Answer: (B) System