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 for now. thank you very much. Sentence2: Addenbrookes Hospital. The contact number for the paediatric intensive care unit is 01223217715. Sentence3: Can I get the postcode as well? Sentence4: Where's the closest hospital with a paediatric intensive care unit? Sentence5: You are welcome! Have a great day! Sentence6: It looks like the Post Code is CB20QQ. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Okay. Sorry for the mix-up. Thanks for checking. Sentence2: The travel time is 105 minutes and the cost is 37.80 pounds. Sentence3: I'm looking for something in the expensive price range. Sentence4: I would like to recommend Ugly Duckling. Would you like me to make reservations for you? Sentence5: Yes, a table for 1 at 20:30. But could you check the train again? I need to leave from Liecester, not arrive there. Sentence6: No you have been a great help, thanks. Sentence7: TR6723 leaves on monday from cambridge arriving in leicester at 16:06. Would that work for you? Sentence8: Now that your reservation at Ugly Duckling is taken care of, is there anything else I can assist you with today? Sentence9: We have 77 options available. Is there a certain day you want to travel? Sentence10: I have your table for 1 booked at the Ugly Duckling, Monday at 20:30. The reference number is YDG81NJ5 . Just a moment while I check on the train. Sentence11: Yes, I'd like to leave on Monday, going to Cambridge from Leicester. Sentence12: It was a pleasure to help you. Thanks for using our service. Goodbye. Sentence13: Okay, I also need a Chinese restaurant in the centre, please. Sentence14: Could I have the travel time and price for that particular train? Sentence15: Yes I can book that for you if you would like. Sentence16: I have 10 restaurants in the centre area that have chinese. Do you have a certain price range in mind? Sentence17: Yes, that would be great. Thank you. Sentence18: I am looking for a train that leaves Cambridge going to Leicester arriving by 16:15 Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: That sounds great. I need to book it for 5 people at 11:45 on Friday. Can I get the reference number please? Sentence2: Did you have a certain time you would like to leave after or arrive by? Sentence3: No but I am looking for a Lebanese restaurant in the city's center. Sentence4: Thank you for using our service today! Sentence5: Ali Baba is the only lebanese restaurant in the centre of town in the moderate price range. Sentence6: Yes, I need to arrive at Bishops by 14:45. Sentence7: Thanks for that. I also need a train to bishops stortford from cambridge. I need it to leave from cambridge on Friday. Sentence8: You're all set. Ali baba will be expecting the 5 of you at 11:45 on Friday. Your Reference number is : UHPZFTUK . Sentence9: TR8585 leaves cambridge at 13:29 and arrives in Bishops Stortford at 14:07. The price is 10.10 pounds. Would you like me to book it for you? Sentence10: sure, i have so many options for you! Sentence11: Bedouis is located in the centre of town. Their address is 100 Mill Road City Centre. Their phone number is 01223367660 Sentence12: Great, what would you recommend for me? Sentence13: Thanks so much. That's all I needed today. Sentence14: I would recommend Bedouin,which serves African food and is in the expensive price range. Sentence15: I'm afraid there is no record for such trains, should we try for a different time? Sentence16: I am traveling to Cambridge and looking forward to try local restaurants. Sentence17: Can you give me addresss and phone number please Sentence18: Any arrival time would work so long as it gets to Bishops before 14:45. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System