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

Ex Input:
Sentence1: I'll be leaving from Leicester and want to go to Cambridge. Sentence2: Booking was successful, reference number is YN5MH1ZN . Anything else I can help you with? Sentence3: Where are you departing from and what is your destination? Sentence4: I need a hotel in the north that has free parking. Sentence5: There are 11 different hotels. To help narrow it down, can you tell me if there is a price range you prefer? Sentence6: All right. I need a booking for six, please, and the reference number. Sentence7: Yes it is. Sentence8: There are 91 trains leaving Leicaster to Cambridge after the specified time. How does Friday 11:09 sound? Sentence9: No thank you that will be all. Thank you for your help in booking my trip and stay! Sentence10: How about the Acorn guest house on 154 Chesteron Road? It's a moderate price range guesthouse that is rated 4 stars with free parking and wifi. Sentence11: Perfect. I'd like to book a 5 night stay for the six of us. Sentence12: Great. Is this hotel stay also starting on Friday? Sentence13: No problem! You have a wonderful day! Sentence14: I'm looking for a train leaving after 10:30. Sentence15: No not really, I would prefer a guesthouse type of hotel with free wifi though. Sentence16: I was able to book the train for you for 6 people. The reference number is 7QAMUGHQ . Do you need anything else? Question: Who has spoken the sentence 15? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Sure! The phone number is 01223452587, the postcode is cb58bs, and that is in the centre area. Sentence2: That sounds great to me. Can I get the phone number, postcode, and area please? Sentence3: You are booked into Prezzo which is moderately priced on the west side. Your reference number is G2FIPHUL . Is there anything else? Sentence4: Great! I think you've covered it all. I don't need anything else. Thank you! Sentence5: Is there one that serves Italian food? Sentence6: You're quite welcome. Just let us know if you need any further assistance. Have a great day! Sentence7: There are none in the area that serves Welsh food, would you like to look for another type of cuisine? Sentence8: I'd like a moderate price range, please. Sentence9: I have found 5 attractions. They are all in the centre. Would you like to visit all saints church? Sentence10: There are 15 italian restaurants. Do you have preference in food price or area? Sentence11: I'm looking for a place to dine that serves welsh food. Sentence12: I am also looking for a place to go, anything with architecture. Sentence13: I don't have an area preference, but I would like to book a table for 6 people at 16:45 on wednesday. Sentence14: I have 5 moderately priced Italian restaurants. Do you have a preference on area, they are spread around the east, west, south, and centre. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Great. Thank you. I'm also looking for a moderately priced, 4 star hotel. Sentence2: Where are you leaving from? And what day do you need to leave? Sentence3: We have three trains arriving by 10:30. What time would you like to leave? Sentence4: I would say you should leave by 09:35 Sentence5: There are 11 choices. Picking an area of town will help to narrow it down. Sentence6: Unfortunately there aren't any hotels that match that criteria. They are all guesthouses. Sentence7: What time would I need to leave in order to arrive by 10:30? Sentence8: I need to get to Cambridge by 10:30, is it possible to do that by train? Sentence9: Booking was successful for the a and b guest house. Your reference number is : 1HPJ1F1W . Do you require any further assistance? Sentence10: I'll be leaving from Ely on Monday. Sentence11: There are many to choose from. Do you have a preferred area? Sentence12: TR2987, fare is 4.40 pounds and your trip will be 17 minutes. Sentence13: I don't have a preferred area, but I am looking for a hotel, not a guesthouse. Does that narrow it down? Sentence14: no that will be all thanks so much. Sentence15: Is there anything else? Sentence16: Not, that is all I will need today. Thanks. Sentence17: Ok can i get the train ID and price? Sentence18: Ok, a guesthouse will have to do. How many choices do I have? Sentence19: You're very welcome. Have a good day. Sentence20: Please pick the best option. I need a room for 8, for two nights and starting Monday. Question: Who has spoken the sentence 8? (A) User (B) System

Ex Output:

Answer: (A) User