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

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Oh yes I have many. Any preference for area? Sentence2: There are 5 Indian restaurants located on the west side near Magdalene college that are expensive. I would recommend Tandoori Palace. Sentence3: Thank you. I'm also looking for an Indian restaurant in the expensive price range. Is there anything like that around? Sentence4: There are many things to do, to help narrow down the results what part of town are you looking to tour in? Any particular activity you'd like to do? Sentence5: That sounds fantastic. Could I have the postcode, phone number, and address, please? Sentence6: Their postcode is cb43le, phone number is 01223506055, and address is 68 Histon Road Chesterton Sentence7: Alright, awesome! Have a fantastic day! Sentence8: I am looking for tourist attractions. Sentence9: There are five colleges on the west side. Magdalene college is nice. It's address is Magdalene Street and entrance is free. Sentence10: Are there any colleges on the west side? If so can you tell me the address and entrance fee? Sentence11: I would like to be close to Magdalene college. That same area would be perfect. Sentence12: That's everything I need. Thank you for your help. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System