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

[EX Q]: 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
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I would actually like to book it for 8 people, not 3. Sentence2: Could you reserve the one in the centre of town for 3 nights starting Monday? There will be 3 of us. Sentence3: You're welcome. Glad to help! bye bye! Sentence4: Sure no problem. So the hotel is huntingdon marriott hotel and your reference number for the booking is 34BAQ2WK . Is there anything else I can help? Sentence5: I am looking for a hotel in the expensive price range. Sentence6: Unfortunately, I wasn't able to book you for the day and time you wanted. Would another day or time be alright? Sentence7: No, it doesn't matter. I would like a 4 star hotel with free parking though. Sentence8: That's great. I'm all set , thank you! Sentence9: There are 5 expensive hotels available. Did you have a preference as to area of the hotel? Sentence10: There are two, one in the west and one the centre of town. Sentence11: I couldn't book that one either. Would you like to change your criteria? Sentence12: Okay, could you try the other one, please? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I would be more than elated to book a table for you, but what day and time would you like it for? Sentence2: I'd recommend clowns cafe. Would you like reservations? Sentence3: their post code is cb11ly Sentence4: I need the table for Tuesday at 14:45, but if for some reason Tuesday doesn't work Sunday is also acceptable. I will need the reference number as well. Sentence5: 01223355711 is your reference number. May i help you with anything else? Sentence6: I cannot locate the restaurant you are speaking of. Sentence7: I would like Italian food, if possible. Sentence8: No, that was everything. Thank you! Sentence9: Thank you for contacting us. Have a great day! Sentence10: I also need an expensive place to dine in the mid of town. Sentence11: it is called parkside pools. find me their post code. Sentence12: I am sorry, i'm looking for a attraction called parkside pools not a restaurant. Do you have their postcode? Sentence13: I wanted to find out about local restaurants in Cambridge. Sentence14: kindly be more specific Sentence15: that will be ok once you find the restaurant book a table for 6 people Sentence16: There are 33 restaurants with your requirements. What type of food do you feel like eating? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]:
Answer: (B) System