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

Example Input: Sentence1: That's all I need. Thank you! Sentence2: Yes, please. Table for 8 at 15:00 on wednesday. Sentence3: I can't wait to get to Cambridge and try some of the restaurants I've heard about. Can you tell me about one of them? I think the name is Little Seoul. Sentence4: Thank you for contacting Cambridge TownInfo centre. I hope you have a nice trip! Goodbye! Sentence5: I have a train leaving cambridge at 11:36 and arriving in norwich by 12:55. Would you like me to book that for you today? Sentence6: I'd like to arrive in Norwich by 13:15 if possible. Sentence7: Can we do the same day at 14:00 instead? Sentence8: I'm so sorry, but Little Seoul was unable to accommodate that reservation. Would you like to try a different day or time? Sentence9: Little Seoul is a Korean restaurant in the city centre which is in the expensive price range. Would you like me to book a table for you? Sentence10: The booking was successful, reference number is 0F3L674U Sentence11: Thats is great, I need it for 8 people as well, and can I get a reference number as well please? Sentence12: Where will you be wanting to go? Sentence13: Great I also need to get a train on thursday leaving from cambridge. Sentence14: Sure thing. Your booking was successful. Your reference number is : WOWBP7SK . Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: No I have nothing in particular in mind. Sentence2: Thanks. I am also looking for somewhere to eat near the museum. I'd like to have Chinese food for dinner. Sentence3: Let's do a museum. Can you please send me the postcode, and phone number please. Sentence4: we can do Museum of archaelogy and anthropology, it is in university of cambridge, downing street. code number cb23dz. their phone number is 01223333516 Sentence5: There are 3 options. I recommend jinling noodle bar. Sentence6: Great, now can you also book a taxi for me? I need to make sure I get to the restaurant from the museum in time for that reservation. Sentence7: Booking completed! The car type is a black honda and the contact number is 07016630526. Can I help with anything else today? Sentence8: Thank you and enjoy the city! Sentence9: What time would you like? Sentence10: Thanks, that's it for now! Have a good day! Sentence11: There is lots to see in the centre. Were you looking for a certain type? Sentence12: Booking was successful. The table will be reserved for 15 minutes. Your Reference number is : YNWUFRQ4 . Sentence13: A moderate price range would be best. Sentence14: There are 10 Chinese restaurants in the centre. What is your price range, please? Sentence15: Would you be interested in architecture, a museum, or perhaps theatre? Sentence16: I'd like to find an interesting attraction in the city center. Sentence17: I would like to reserve it for 11:15 for 8 people. Sentence18: That sounds interesting. Can I get reservations for Thursday? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: okay your all set ref # is KWN1JAD4, anything else today? Sentence2: Just pick a place (as long as it's expensive) on the south side and make the reservation and give me the reference number. After that, I'm going to need a taxi. Sentence3: You have been extremely helpful, thank you so much. I am all set. Have a nice day. Bye. Sentence4: The acorn guest house has availability for that time. Sentence5: Please find me a guesthouse that offers free parking Sentence6: Is there a certain type of food you'd like? The options are Chinese, Indian, Italian, and Mexican. Sentence7: Thank you for using our system today! Sentence8: Yes. Please book it for me, in the perimeters I stated above. Sentence9: I need a place that will have space for 6 people staying 4 nights starting from Wednesday. Sentence10: I need a place to eat in the south and VERY expensive for 6 people on wed at 19:00 Sentence11: There are quite a few. 16 to be exact. Are you looking for a certain price range or area? Sentence12: I have booked your party of 6 at the Peking Restaurant. You are booked for Wednesday at 19:00. Your reference number is 0Z92M9D7 . Sentence13: Ill need to taxi to go from the hotel to the restaurant by 19:15. Sentence14: Booking completed! Booked car type : black skoda Contact number : 07463823856 Sentence15: Sure, what area would you like to stay in and what is your price range? Sentence16: What can I get thats a 4 star? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User