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

Ex Input:
Sentence1: You're welcome, have a great day. Sentence2: I would like modern european food and in should be located in the centre of town. Sentence3: I would like a train that leaves from stansted airport after 16:15 Sentence4: I'd like a cheap one, I don't want to spend too much on food, I want to bring back as many knick-knacks as possible. Sentence5: Please get me their postcode instead Sentence6: How many tickets do you need me to book for the train? Sentence7: I actually don't need a ticket right now. Could you please tell me the price and travel time though? Sentence8: There are 8 results for European restaurants in the centre area, would you prefer an expensive, moderate or cheap price range? Sentence9: Yes, the postcode is cb58aq. Sentence10: The river bar steakhouse and grill meets all your needs. Do you want me to book? If yes, for how many, what day and what time? Sentence11: Absolutely. The TR5365 costs 10.10 pounds and has a travel time of 28 minutes. What else can I do for you? Sentence12: There's a train leaving stansted airport for cambridge every hour on Monday, by what time would you like to arrive? Sentence13: I will be traveling on monday and need to go to cambridge Sentence14: The earliest train is TR5365 that leaves the airport at 16:24 and arrive in Cambridge at 16:52. Do you need a ticket? Sentence15: Thank you, that will be all. Sentence16: I don't care. Give me the earliest one leaving after 16:15. Sentence17: What are would you like to eat? Sentence18: Yes please thank you. Can you also assist to find me a restaurant where i can dine in the Center. My preference is Modern European food. Sentence19: I also need a place to eat. Sentence20: What day will you be traveling, and where will you be heading to? Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: You're welcome, enjoy your day. Sentence2: How about Downing College? It has free admission and is located on Regent Street/ Sentence3: I'd like to visit a college in the center of town. Could you help me find something interesting? Sentence4: That sounds great! Can I have their phone number and postcode, please? Sentence5: No, that was all I needed to know. Thank you, you've been very helpful. Sentence6: Downing College's phone is 01223334860 and their postcode is cb21dq. Can I help you with anything else today? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I'm also looking for a train that leaves after 15:15 that arrives at Birmingham New Street. Sentence2: Perhaps there is one that serves Indian food. Indian food is also good. Sentence3: The Kohinoor sounds good. Could you book a table for 2 for me? Sentence4: It's for around 12:45 on Wednesday. And that was for 2 people please. Can I get the reference number then too please? Sentence5: Can I recommend Kohinoor? They serve budget friendly Indian food in the centre of town. Sentence6: I was able to book a table for you at 12:45. The reference number is 0CUR7IQX . Sentence7: Unfortunately, there are no German restaurants in the price range you requested. Would you like a different restaurant? Sentence8: I'd be happy to reserve your table. What time would you like to dine? Sentence9: Thanks, could you book 2 tickets and let me know the reference number please? Sentence10: I want to find a German restaurant please that's in the cheap price range. Sentence11: Please book trainid TR8952 leaving cambridge at 16:01. Sentence12: That's everything. Thank you very much! Sentence13: Booked! Reference number is FGBPBWP1 . Total fee is 150.19 GBP, paid at the station. Anything else? Sentence14: You are very welcome. Enjoy your day. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User