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: The booking was successful. Your reference number is : WPCH771U . You will be staying at The Cambridge Belfry in the west area. Sentence2: how about one that has free parking? Sentence3: Great, thank you. Can you also help me find something fun for me to do while I am in town? Sentence4: I would prefer the cheap range. Can you book for me 8 people for four nights beginning on Friday? I will need the reference number. Sentence5: There are two hotels in the west that have free parking. One is in the expensive price range and one is in the cheap range. Which would you prefer? Sentence6: Then can you find a hotel in the west with a moderate price range that includes free wifi? Sentence7: I would suggest visiting the old schools. Sentence8: Are there any parks around? Sentence9: I am looking for a cheap two star hotel in the North can you help? Sentence10: The cherry hinton water play is located in the east and the postcode is cb18dw. Sentence11: Unfortunately, there is nothing available in that area. Sentence12: I would it to be in the east and could I get a postcode. Thanks goodbye Sentence13: There are several parks in town. In the centre there's the Cambridge University Botanic Gardens, and a few others in the north, east, and south. Do you have a preference? Sentence14: There is nothing like that available either. Would you like to try searching for something else? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User