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: There are 3 chinese restaurants, I recommend the jinling noodle bar. Would you like me to book it for you? Sentence2: Thank you . I also am looking for places to go in town. Can you help me? Sentence3: How about the castle galleries? They are located at unit su43, grande arcade, saint andrews street. Phone number is 01223307402. Admission is free. Sentence4: There are several. Did you have a price range in mind? Sentence5: That sounds great, thanks! That's all I need today. Sentence6: There are 44 great places to visit if you would like to stay near the centre of town. Would you like a museum, architecture, college or just any suggestion? Sentence7: I'd like to find a Chinese restaurant in the center of town. Sentence8: No, not right now but can you provide me with an address and postcode for whichever of those restaurants you would recommend? Sentence9: I would like to visit a nice museum. Please give me the address, entrance fee and phone number. Sentence10: Yeah, no problem happy to help. Sentence11: the restaurant jinling noodle bar the address is 11 Peas Hill City Centre and postal code is cb23pp Sentence12: Yes, moderately priced, please. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System