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

Input: Consider Input: Sentence1: Thank you. Could you please get me the phone number? Sentence2: Yes, I was wondering what the location is of Addenbrookes Hospital. Sentence3: no, that's all thanks Sentence4: That hospital is located on Hills Rd, Cambridge. Sentence5: Happy to help. Feel free to call back if any additional questions come up. Have a good day. Sentence6: The main hospital phone number is 01223245151. Were you looking for a specific department? Question: Who has spoken the sentence 4? (A) User (B) System

Output: Answer: (A) User

Input: Consider Input: Sentence1: That train departs at 05:29. Sentence2: It appears that the Curry Garden meets your needs! Would you like me to book that for you? Sentence3: There are many options for expensive dining. Sentence4: Yes, please make reservations for 5 people at 16:45 on Monday. Sentence5: Booking was successful. The table will be reserved for 15 minutes. Reference number is : J8918H0X . anything else i can help you with? Sentence6: What day will you travel? Sentence7: Thank you for contacting us and have a nice day. Sentence8: I would like to arrive by 11:00. Could you give me the departure time and train ID? Sentence9: Thank you. That is all that I need. Sentence10: Thanks. I also need a train from Bishops Stortford to Cambridge. Sentence11: Not really, as long as it is open on Monday and has room for 5 people. Sentence12: Is there a departure time? Sentence13: There are a number of expensive Indian options. Is there a specific part of town you were looking for? Sentence14: I will be traveling on Monday. Sentence15: I need a place to eat that is expensive. Sentence16: OKay, is there a certain time you need to leave? Sentence17: Specifically, I would like an Indian restaurant. Sentence18: I can suggest the TR4448 arriving by 06:07. Question: Who has spoken the sentence 3? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Ok great, can you please confirm your departure location? Sentence2: Your reference number is 2AIO16E6, is there anything else you need? Sentence3: No thanks. That won't be necessary. Have a great day. Thanks. Bye. Sentence4: I'd like to leave on Friday and get there by 15:30 Sentence5: The first one sounds nice. I'd like to make a reservation for 2 people at 13:30 on Thursday. Sentence6: I am looking for a moderately priced restaurant in the centre. Sentence7: I am also looking for a train that goes to Stevenage. Sentence8: Great. I'll make the reservation for you at the hotel du vin and bistro. Is there anything else I can do for you? Sentence9: Could I have the reference number please? Sentence10: Your train trip would cost you 12.80 pounds. Would you like me to book it? Sentence11: You're welcome. You have a great day as well. Bye! Sentence12: There are 5 trains leaving Cambridge with that arrival time. What time would you like to leave? Sentence13: What other information can you give me about this train ride? Sentence14: The latest departure time would work best. thank you. Sentence15: There are 21 options for moderately priced food in the centre. What type of food are you looking for? Sentence16: I'm hoping to have some european food. Sentence17: There are 4 restaurants that meet your specifications: Hotel Du Vin and Bistro, Galleria, De Luca Cucina and Bar, and Riverside Brasserie. Do any of these meet your liking? Sentence18: I'll be departing from Cambridge. What will the ticket cost me? Question: Who has spoken the sentence 14? (A) User (B) System
Output: Answer: (A) User