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: Yes, could you give me their phone number and the entrance fee? Sentence2: No, but maybe there is something in the type of college? Sentence3: Your reference is BY4SOX2L . Do you need anything else? Sentence4: Thank you for using our service. Have an excellent trip! Sentence5: The Gonville Hotel is the only 3-star hotel in the city center. Would you like to book a room there? Sentence6: Sounds good. I need it for 8, 2 nights Friday. Sentence7: no thanks. thats all for today. bye. Sentence8: I was also wanting to see if there is an entertainment place in the centre part of town. Sentence9: It is an expensive hotel. Sentence10: There is none would you like to try another part of town? Sentence11: I need a 3 star hotel in the Cambridge centre. Sentence12: There is no entrance fee. The number for Emmanuel College is 01223334200. Is there anything else I can help you with today? Sentence13: Emmanuel college always has a lot going on, would you like more info on them? Sentence14: Not sure yet. Is it expensive? I only like to stay in expensive hotels. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System