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: Sure thing!. There are 69 restaurants in the centre. Is there a specific cuisine or price range you're looking for? Sentence2: I have found 9 Indian restaurants. Do you have a price range in mind? Sentence3: Excellent. That's all I need. Sentence4: Great! Is there anything else I can assist you with? Sentence5: Not really. But I am also interested in finding some architecture to look at. Sentence6: The church is in the centre area, its phone number is 01223452587, and the entrance fee is free. Sentence7: Hello! Can you help me find a restaurant somewhere in the center of Cambridge please? Sentence8: Yes, I'm looking for an indian restaurant. Sentence9: Thank you and have nice visit. Sentence10: No, that will be all today. Sentence11: May I get the area of the church, phone number, and entrance fee? Sentence12: I recommend the All Saints Church, located in the centre. Would you like more information? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User