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

Example Input: Sentence1: Okay that is all I needed. Sentence2: Can you help me find a hospital close by for an injury I have? Sentence3: The address is Hills Rd, Cambridge and Postcode is CB20QQ. Sentence4: I have information for Addenbrookes Hospital at Hills Rd, Cambridge. If you have a certain department you would like to contact, I can get that number for you. Sentence5: Okay. Glad I could be of help. Sentence6: I just need the adress and the postcode if you have it. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Could you check the spelling(city centre north b and b) and try to search again? Sentence2: The TR2512 takes 51 minutes. Anything else you need? Sentence3: I will be traveling on Thursday. Sentence4: It is a cheap, 0 star guesthouse located at 328a histon road on the north side. It has free internet and parking. Phone number and postcode are 01223312843 and cb43ht. Sentence5: Yes I am looking for information on a hotel called City Center North B and B. Sentence6: Sure! give me the following information: Day of visit, number of people and number of days that you will be staying. Sentence7: I cannot find that hotel. Any other hotels you would like to find? Sentence8: You're all set. Your reference number is HOSVDEGA . Can I help you with anything else today? Sentence9: Do you have a time preference? Sentence10: Well that will not work. Sentence11: I need to arrive by 14:15. Sentence12: there are many trains but you need to tell us which day you want to travel Sentence13: I am also looking for a train into Cambridge from London Kings Cross. Sentence14: Please book for 2 people starting on thursday for 4 nights. Sentence15: enjoy your stay in Cambridge! Sentence16: The TR2512 will fit your needs. Would you like to book this train? Sentence17: The first train leaves at 5:17. Sentence18: Thank you. Are you able to book that for me? Sentence19: Not at this time. What is the travel time for that train, please? Sentence20: no that will be all thanks Question: Who has spoken the sentence 19? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: You're welcome, have a nice day. Sentence2: Your taxi has been booked. The contact number is 07330545456. Is there anything else I can help you with today? Sentence3: Okay well please call back if you change your mind. Sentence4: I'd love to visit a park, especially a botanical garden if one is in that area! Sentence5: Will it arrive at the restaurant by the booked time? Sentence6: Booking was successful. The table will be reserved for 15 minutes. Reference number is : B1TRUT9Y . Sentence7: Unfortunately there are no restaurants that match that description. Could you like to try other food types? Sentence8: I would prefer expensive and I'm looking to reserve a table for 1 at 17:00 on Sunday, please. Sentence9: There are 44 attractions that fit your criteria. Are you looking to visit a specific type of attraction? Sentence10: Cambridge University Botanic Gardens is located in town centre. Would you like more information? Sentence11: It is a red honda, and their phone number is 07330545456 Sentence12: I can get those reservations for you at la mimosa. Would you like me to make the reservation? Sentence13: Okay, would 16:00 be a better time on Sunday? Sentence14: I'm looking for an attraction in the centre of town. Sentence15: No, thanks for helping. Goodbye! Sentence16: Yes, I need a table for 1 at 17:00 on Sunday. Sentence17: Yes, may I have their phone number please? I'd also love to eat at a Malaysian place near the park. Any ideas? Sentence18: I have confirmed that the taxi will arrive at La Mimosa at 16:00. Is there anything else I can help you with today? Sentence19: Unfortunately, that time slot is unavailable. Can I try a different time for you? Sentence20: Correct. Everything is set. Sentence21: Hi, I would love to try a Mediterranean restaurant. Do you have any suggestions? Sentence22: ok, that's all I needed, thank you. Sentence23: Can you confirm the time that taxi was booked? I need it to arrive at the restaurant by 16:00. Sentence24: I just need to know what type of car you booked for the taxi. Sentence25: There are three options, the gardenia which is cheap in price range, along with la mimosa and shiraz restaurant which is expensive. Ant preference? Sentence26: I would like to book a taxi to commute between the two places. Question: Who has spoken the sentence 18? (A) User (B) System
Example Output:
Answer: (A) User