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

Ex Input:
Sentence1: How about the Gonville Hotel located in the centre area of town? Sentence2: Between $100-$300 per night. Sentence3: I have several available. What is your price range? Sentence4: Ok, I have several hotels. Any particular location? Sentence5: Location doesn't really matter as long as there's free parking available. Sentence6: What is their postcode? Sentence7: I need a place to stay with free wifi. Sentence8: Their postcode is cb11Iy, address gonville place, phone 0122336661 they have wifi and free parking too. Would you like me to book this for you? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Ok, that would be great. Can I get the reference number please? Sentence2: Sure, and make me a booking for 7 people. Sentence3: I'll be departing from Cambridge on Wednesday. Sentence4: Yes I need a train going to birmingham new street leaving after 18:15. Sentence5: I have Hughes Hall, 01223334898, with free entrance. The broughton house gallery at 01223314960, also free. I don't seem to have any churches. Can I help you further? Sentence6: there are some great museums, colleges and churches for you to visit. Sentence7: Please recommend some worthwhile places to visit in the centre. Sentence8: Have a wonderful visit. Thank you for using Cambridge TownInfo Centre. Goodbye. Sentence9: I will go ahead and book that for you. Sentence10: Great, I would like to get some phone numbers for those places in the centre. Sentence11: Where will you be departing from, and on what day? Sentence12: Thank you. That's all I need for today. You've been a great help. Sentence13: There are five trains leaving on Weds. Do you want me to pick one to book? Sentence14: TR9236 leaves cambridge on wednesday on 19:01 and arrives at birmingham new street at 21:44. I have booked 7 tickets. Your Reference number is : 2BGY3ZRW . Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Id is TR0625, travel time is 79 minutes and you will arrive by 22:55. Anything else? Sentence2: Actually, could you help find a train as well? To Norwich? Sentence3: I found a train from cambridge to norwich at 05:36 on Friday, will that work? Sentence4: Sunday would be good. Sentence5: No, you've answered all of my questions. Thanks so much for your time. Bye. Sentence6: The Acorn Guesthouse is a 4 star hotel located in the north side of town. It includes free internet and parking. Would you like me to book it for you? Sentence7: I need to leave after 21:30, is there anything closer to that time? Sentence8: Thank you, and thanks again for using our free service. Sentence9: I am trying to find the Acorn Guest House. Sentence10: No, just leave after 21:30. Will you give me the travel time, arrival time and the Train ID? Sentence11: No, thanks. I will go ahead and book it myself. I think I have all the information I need. Thank you. Sentence12: Is there a time you need to arrive by? Sentence13: Yes there are 14 trains. Which day would you like to depart? Sentence14: Thank you for using our service, have a nice day. Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:

Answer: (B) System