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: Nope. That's all. Thanks a bunch. Goodbye. Sentence2: There are many wonderful places to dine in Cambridge. What type of cuisine and price range would you prefer? Sentence3: Perhaps a boating attraction. Is there one in the centre of town? Sentence4: i am happy i was of help. gooday Sentence5: Caffe Uno is located at 32 Bridge Street City Centre. Their phone number is 01223448620. Is there anything else I can help you with? Sentence6: Yes please, close to the city center sounds good. Sentence7: I'm sorry, it doesn't appear there is any Catalan food in Cambridge. Would you like to try something else? Sentence8: Can you find a place to dine for me? Sentence9: I would like to eat catalam food that is expensive and located in the centre of town please. Sentence10: not now but you get me the address and phone number Sentence11: There are two, however both do not have admission fees pubicaly available. Do you have one in particular in mind or shall I randomly choose one? Sentence12: I would like some information on attractions in town that would be in the centre of town. Sentence13: The phone number for the Cambridge punter is 07807718591. Is there anything else I can help you with? Sentence14: we have 44 attractions in the centre of town. Do you have a type in mind? Sentence15: Okay that is close it city centre,can I make a booking for you? Sentence16: No, either one will work. Could you get me their phone number? Sentence17: There are 4 expensive Italian places in city centre. May I recommend Caffe Uno? I could make a reservation for you, if you like. Sentence18: How about one that serves Italian food? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System