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

Ex Input:
Sentence1: Yes, both the Hobsons House and the college are both in the west part of town. Would you like information for the college? Sentence2: Booking completed! Your ca is a black lexus and the contact number is 07301130189 Sentence3: It doesn't matter. Sentence4: Queens college is quite pretty. It is on Silver street in the west. Sentence5: Perfect! That's all I need today, thank you! Sentence6: No, I need something in the western part of town. Sentence7: There are lots of churches in the centre of town. Would you like to visit one? Sentence8: What would you recommend? I don't have a preference. Sentence9: There are many colleges and museums on the west side. There is also one entertainment center. Which do you prefer? Sentence10: Do you know when you want to get there by? Sentence11: You are very welcome. Glad I could help. Have a nice day. Sentence12: Is it near the Hobsons House hotel? Sentence13: Actually, the college sounds great. I don't need more info. But I would love a taxi to get me from Queens College to Hobsons House. I want to leave by 16:30. Sentence14: Hello. I'm looking for a few good places to see in town on my next visit to cambridge. Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: No, that's all the information I need. Thanks! Sentence2: You can reach them by phone at 01223312598. Anything else I can help with? Sentence3: Booking was successful. Reference number is : T212RFL5 . Sentence4: Yes, Gourmet Burger Kitchen has North American cuisine and is expensive. It is located in the City Centre. Sentence5: That sound perfect. Could I make a booking for 6 people? Sentence6: I need help finding a guesthouse to stay at. Sentence7: I'd like the east part of town please. Sentence8: Ok great, have a wonderful day! Sentence9: Do you know of a restaurant by the name of gourmet burger kitchen? Sentence10: Of course! What day and how many nights? Sentence11: can you tell me the phone number please Sentence12: Warkworth House is a great place. They are rated 4 stars, moderately priced and offer free parking and internet. Sentence13: How many days will you be staying? Sentence14: I have a number of different guesthouses available. Do you want to stay in a particular part of town? Sentence15: I'll be starting my stay on this coming Sunday. Sentence16: 5 nights please. Question: Who has spoken the sentence 8? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: You're welcome, have a great day! Sentence2: I can help you with that. where are you going? Sentence3: Your booking is complete. The taxi is a yellow Honda. Contact number 07024160438. Sentence4: Thank you for your help that is all I need today Sentence5: I am going to Cambridge Road Church of Christ. Sentence6: I need to book a taxi to come to Da Vinci Pizzeria by 01:45. Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System