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

Ex Input:
Sentence1: Could you also get me a taxi between the two that leaves the hotel by 6:15? Sentence2: There are 11 guesthouses that fit your criteria. Do you have a preference of north, south or east? Sentence3: The address is saint andrew's street. Sentence4: the taxi is booked. it's going to be a yellow tesla. their phone number is 07606976296. Sentence5: The area doesn't matter. I'll go with whatever guesthouse you recommend. Please make my reservation for 3 people, 5 nights, starting Thursday. Thanks. Sentence6: Thanks. I don't need anything else. Sentence7: What is the postcode? Sentence8: I have you booked at archway house, the reference number is N8IRHQYO, any further questions? Sentence9: I'm also looking for a moderately priced guesthouse, one with a four star rating. If it doesn't have free parking, that's fine. Sentence10: Can I recommend christ's college? Sentence11: Yes could I have the address and postcode of the college please. Sentence12: i am glad i have been of help. good day Sentence13: Have a great one. Thanks again for your help. Goodbye. Sentence14: There are 79 attractions, Do you have an idea of the type you're looking for? Sentence15: I need information on places to go and see. Sentence16: Yes, I would like the type of college. I will need the address and postcode please. Sentence17: Thank you, I'm glad I could be of help. Goodbye. Sentence18: The postcode is cb23bu. Can I help you find anything else today? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Sorry about that, i'm leaving from norwich. Sentence2: Brookshite? Can you please repeat that? Sentence3: You are more than welcome! Sentence4: Ok. I can help you find a train. Where will you be departing from? Sentence5: ive boked that for you trainID departure destination day leaveAt arriveBy price duration book (optional) TR9900 norwich cambridge friday 05:16 06:35 17.60 pounds 79 minutes Sentence6: Thank you for your help Sentence7: I will be leaving from Brookshite. Sentence8: You're all set! The reference number is 44LHUSZT . Sentence9: I'm looking for a train going to cambridge. Sentence10: Yes please book that and I need the reference number. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: How about Archway House in the north? It has free parking and free Internet. It gets 4 stars. Would you like to book this one? Sentence2: The closest I have to that is a train arriving at 15:06 and takes 105 minutes to arrive. The train ID for this journey is TR1160. Would you like a reservation? Sentence3: Yes please. Book it for 4 nights for 6 people. We'd love to check in on Sunday Sentence4: I'm trying to narrow 11 choices down. Would you want free parking or free internet? Sentence5: free parking, please. Sentence6: Thank you. That was all I needed. Goodbye. Sentence7: You have several choices. Trains leave Cambridge at 5:21, 6:21, 7:21, 8:21, and 9:21. The 9:21 arrives at 11:06. Shall I book one of these ? Sentence8: Leaving from Cambridge this coming Thursday. Sentence9: Great. Your booking was successful and your reference number is PA8I7W04 . Sentence10: Hi, I need to locate a train to Leicester that will arrive by 16:45. Sentence11: No, I don't need a reservation. Sentence12: Okay we can do that. Where are you departing from? Sentence13: Yes, I was also looking for a place to stay somewhere in the north. Sentence14: Is there anything that I may help you with today? Sentence15: OK I need one that arrives at 15:45 and I will need the travel time and the train ID. Sentence16: In the moderate price range, please. Sentence17: sure, what price range? Sentence18: Have a nice day. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User