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

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
Answer: (B) System

Sentence1: Thanks for using our services. Sentence2: I would prefer moderate price range. Sentence3: Got everything. Thanks. Goodbye. Sentence4: The restaurant is called meghna. The postcode is cb43lf, the address is 205 Victoria Road Chesterton. Anything else? Sentence5: Are there any Indian restaurants there? Sentence6: no, I just need to know the postcode. Sentence7: WHich price range do you want? I have expensive and moderate. Sentence8: Yes, there are 22. What area would you like to dine in? Sentence9: I want to dine in the west. Sentence10: I have found one, Can I make a booking for you? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: I recommend, the gallery at twelve a high street, their postal is cb15dh, any further questions? Sentence2: Ok. Leverton House guest house sounds fine. Can you book it for 2 nights on Monday? There will be 7 people. Sentence3: I'm confused. I need a taxi between the two places that leaves the hotel by 2:30. Can you help me with that? Sentence4: There are many can I get a price range please? Sentence5: There are six guesthouses that meet your needs. I have heard wonderful things about Leverton House on Newmarket Road. Would you like me to make a reservation? Sentence6: I am planning a trip to Cambridge. Looking for a place to stay in the East! Sentence7: Thank you for contacting us and have a nice day. Sentence8: Could you find me a museum instead? Sentence9: I am not finding any that meet your requirements. Is there something else you are looking for? Sentence10: I am not particular as along as it has 4 stars and free wifi. Sentence11: Sure we have many colleges to choose from. Would you like a recommendation? Sentence12: Please provide me with a Taxi that can arrive by 2;30, I would like a phone & reference number. Sentence13: There aren't any colleges located in the east. Do you want to search in other areas or do you want to find a different kind of attraction? Sentence14: Could you help me find a college in the east to tour? Sentence15: Your booking for Leverton House was successful. The reference number for this stay is 8RX4FFKM . Is there anything else I can help you with? Sentence16: I prefer a hotel, is there a hotel in this area that is 4 star? Sentence17: Thank you very much! That is all I need. Sentence18: I need also a taxi to leave the hotel by 2:30 Sentence19: Yes, please. And I will need the postcode for it. Sentence20: Booking completed! Booked car type : white ford Contact number : 07492685180 Question: Who has spoken the sentence 12? (A) User (B) System

Answer: (A) User