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: I found just one. The Cambridge Belfry located on Back Lane, Cambourne. It has a great reputation. Sentence2: Thank you. I still need the address and postcode. Sentence3: I just don't see anything I would be happy to change location or type of food. Sentence4: Their phone number is 01954714600 and address is back lane, cambourne. Sentence5: Hm is there a cheap turkish food restaurant anywhere in cambridge? Sentence6: Ok that will work. I need the address, phone, post code for that. Sentence7: No thanks, that's all for now. Sentence8: Ok! have a great day! Sentence9: Do you have any cheap restaurants in the centre? Sentence10: No there is not. Can I try a different price range? Sentence11: Lots! Any particular cuisine in mind? Sentence12: Can I have the address and postcode? Sentence13: Please check again for a cheap Turkish restaurant in the centre. If not, try Indian food. Sentence14: No, do you have one you recommend? Sentence15: I am looking for a hotel with free parking but wifi isn't a necessity. Sentence16: Their address is 86 Regent Street City Centre postcode cb21dp. Would you like me to book you a table? Sentence17: I have many possibilities for you. Do you have a certain area or price range in mind? Sentence18: Hotel please. Sentence19: It should be in the same price range as the hotel. Sentence20: I would like it to be cheap. Sentence21: i am also looking for a place to dine Sentence22: I have two options for you italian food or vietnamese food. Which would you like? Sentence23: i dont have anything that matches your description. would you like me to try something else? Sentence24: The phone number is 01223307581. Sentence25: Do you have a preference of hotel or guesthouse? Sentence26: Do you want a restaurant near the hotel in the west? Do you have a price range or cuisine in mind? Sentence27: I actually really want some Turkish food. Can you find a place in the centre that is cheap? Sentence28: I would recommend j restaurant. It's an asian oriental restaurant and I hear the food is amazing. Question: Who has spoken the sentence 21? (A) User (B) System
Output: 


Answer: (B) System