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

Ex Input:
Sentence1: How about an expensive restaurant that serves British food? Sentence2: Cineworld sounds perfect. What's their postal code? Sentence3: The postal code is cb17dy. Can I get you anything else? Sentence4: There are six expensive British restaurants in Cambridge. Do you have a preferred section of town? Sentence5: Have a good time! Sentence6: It's all new to me. Could you recommend one? Sentence7: Sure thing, we have the cineworld cinema located at Cambridge leisure park, Clifton way. Sentence8: Absolutely, I recommend the Cambridge Chop House at 1 Kings Parade in the centre of town. This is a highly recommended British experience by locals and tourists a-like. Sentence9: No, that'll be all. Thank you for all of your help today. Sentence10: I am sorry but there are no restaurants matching your requests. Would you like me to search for a different food type? Sentence11: Great. Could you also help me find a cinema in the south of town? Sentence12: Hello, I am trying to locate a restaurant that serves northern European food, and I would prefer a more elegant setting. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Where are you headed? Sentence2: anytime after 21:00. Sentence3: What time monday would you like to depart? Sentence4: okay, I do need the reference number also. Sentence5: Birgmingham New Street from Cambridge Sentence6: Yes will you book it for me ? Sentence7: I highly recommend Zizzi Cambridge in centere. It has excellent pasta and meatballs. Would you like me to book a reservation for you? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DKSUCWY6 . Sentence9: Yes, on Monday for 2 people at 14:30. Olease give the reference number. Sentence10: thank you that will be all good bye Sentence11: I need 2 tickets and a reference number please Sentence12: My apologies, busy weekend and the system is lagging, you are set, reference number is B6SGLAAT total cost is 150.19 GBP, thank you for your patience. Sentence13: Have a nice day, goodbye. Sentence14: How many tickets will you need? Sentence15: Thank you so much, can you please also find me an Italian restaurant in the centre of town that's on the cheap side? Sentence16: TR8406 will depart at 21:40. Is that okay? Sentence17: I need a train on Monday leaving birmingham new street? Sentence18: Sure thing. I will work on getting this booked for you. Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Worth house is a cheap guesthouse in the North. Will that do? Sentence2: Sure thing! There are seven 4 star moderately priced guesthouses in the north. maybe you would like to book on of these Sentence3: I'm looking for a place to stay. It needs to be in the north but it doesn't have to have free parking. Sentence4: No thanks a lot it is enough Sentence5: Can you pick your favorite and book a room for me? There will be 8 people, and we'll arrive on Thursday and spend 3 nights. Sentence6: I am looking for a cheap 4 star hotel on the north. Sentence7: Yes. Is there on in the moderate price range as well? To compare. Sentence8: Booking was successful. Reference number is : RI83HXK1 . do you need information about the hotel? Sentence9: No, but I need to find a train. I'm looking to travel on Friday to London Liverpool Street. Can you help? Sentence10: What is your price range? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:

Answer: (A) User