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

Ex Input:
Sentence1: I hear its a pretty cool place. Can I get their postcode please? Sentence2: Yeah, I need a place to stay on the south side. 4 stars if possible. Sentence3: Postal is cb17sr, they do include internet and they can be reached at 01223240089, can I help with anything else? Sentence4: i am looking for a particular attraction. Its name is called soul tree nightclub. Sentence5: You're welcome! Have a great day! Sentence6: Can you book me a stay at The Aylesbray Lodge? Sentence7: The Soul Tree Nightclub is located in the area of centre. It has an entrance fee of 4 pounds. The phone number is 01223477900. Anything else? Sentence8: The postcode is cb23qf. Do you need anything else? Sentence9: You have a great day as well! Sentence10: Thanks for using our services. Sentence11: Sure! How many are staying, how many days, and what day do you want the stay to start? Sentence12: That was everything, thanks a lot! Sentence13: No I just need the postcode, phone # and if they have internet Sentence14: We have two guesthouses that are 4 stars in the south end, The Aylesbray Lodge Guest House is moderately priced, and Rosa's Bed and Breakfast is in the cheap range. Question: Who has spoken the sentence 12? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: The phone number is 01223420060 and the post code is cb46az. Sentence2: Ok. I booked four tickets for you. Your reference number is FRSZ5A8R . Can I help you with something else? Sentence3: Yes. Book for 4 people. Sentence4: I would like the phone number and postcode for it please. Sentence5: What information are you looking for? Sentence6: Sounds great, before i let you go, I just want to make sure we have covered everything that you need. Sentence7: yes you did Sentence8: TR6806 will leave at 10:01 and arrive at 11:01. The trip will take 60 minutes and it will cost 17.90 pounds. Would you like to book? Sentence9: Thank you! That's all I needed, thanks so much. Sentence10: enjoy your stay in Cambridge! Sentence11: I'm going from cambridge to broxbourne any time after 09:15. Sentence12: I show 404 rail departures on Thursday, can I get something specific for you? Sentence13: I want a train leaving on thursday. Sentence14: Im also looking for a place by the name of milton county park. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I'm glad I could help. Sentence2: Tickets are 75.10 pounds. Is there anything else you need? Sentence3: What information are you looking for? Sentence4: Booking was successful. The table will be reserved for 15 minutes. Reference number is : FNXFS4G4 . What else can I help you with today? Sentence5: Yes, I've heard great things about The Cambridge Chop House. Can you tell me about it? Sentence6: No, thanks. No need to book today, but can I get the price of the ticket? Sentence7: I need transportation, specifically a train from birmingham new street. I need one that gets to my destination by 17:00 Sentence8: Will you book a table for 3 on Monday at 20:30 for me? I'll also need the reference number. Thanks! Sentence9: monday would be perfect Sentence10: TR1238 leaves at 13:40 and will get you there at 16:23, do you want me to book you? Sentence11: Thanks so much. That's all. Goodbye Sentence12: We have several! What day would you like to travel? Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:

Answer: (B) System