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: Unfortunately, we do not have any Indonesian restaurants. Would you like Thai food? Sentence2: Yes, could you give me more info on the Vietnamese restaurant? Sentence3: That is all, thank you for your help. Sentence4: You're welcome. Let us know if we can help you. Sentence5: Their postcode is cb30af. Would you like to book a table? Sentence6: Their address is 17 Magdalene Street City Centre. Sentence7: There is an Italian restaurant, La Margherita and a Vietnamese restaurant called Thanh Binh. Would one of those work? Sentence8: could you give me their postcode? Sentence9: No, that will be fine. I am needing help finding a hotel in a moderate price range with 4 stars and free parking. Can you help me with that? Sentence10: Area doesn't actually matter. But if there are no results for a moderate 4 star type-hotel with parking, then try to find a cheap one instead Sentence11: Great can you book that for 8 people for 3 nights starting thursday? Sentence12: I have one result for you in the cheap pricerange. It is the cambridge belfry. Anything else today? Sentence13: Here is your reference number, SM7PEYSV . The booking is all set for you. Is there anything else I can do for you? Sentence14: how about the west ? Sentence15: What kind of restaurants are in the west that's cheap? Sentence16: I'd be happy to help with your request, to help narrow the results down, what area are you looking to stay in? Sentence17: Sorry, there are no results. Maybe a different star rating or area would work? Sentence18: I'd like to find a cheap Indonesian restaurant. Can you help? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System