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: Great. There are 9 places to stay in the north. Are there any other requirements you want me to look for? Sentence2: The golden house serves chinese food and is in the centre of town. The price range is cheap. May I help you with anything else? Sentence3: You pick. Give me the postcode, internet availability, and address to the one that stands out to you. Sentence4: I have 14 results for moderately priced places to stay, is there a particular area you'd like to stay in? Sentence5: Thanks. My friends told me about a restaurant called Golden House. Do you know what area its in and food type? Sentence6: Hello! I'm looking for a moderately priced place to stay in Cambridge. I'll need free parking. Sentence7: I'm not showing any places to stay with your requirements. Is there another area I can lookup for you? Sentence8: Then how about acorn guest house. Their address is 154 chesterton road and postcode is cb41da. They also have internet. Sentence9: yes I would like to stay in Cambridge Sentence10: I would like something in the north. Sentence11: Nope, that's all, thank you. Sentence12: You're welcome. Thanks for contacting Cambridge TownInfo centre! Have a good day! Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System