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: Does it also have free WiFi? Sentence2: The broughton house gallery is a museum found in the center of town . Entrance is free. Do you need their contact details? Sentence3: Nope. Thanks so much for your help. Sentence4: acorn guest house has internet. Want to book a room? Sentence5: Their address is 98 king street, the post code is cb11In, and their number is 01223314960. Anything else? Sentence6: Great thank you I am also looking to get some info on the broughton house gallery Sentence7: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence8: Yes I need the post code as well, thanks. Sentence9: I need to find a place to stay. I prefer a guesthouse and I'll need free parking for my car. Sentence10: It's a 4 star hotel, the Postcode is cb41da and the address is 154 chesterton road/ Sentence11: I recommend the Acorn Guesthouse on the north side. Does that suit your needs? Sentence12: Yes, can I get the address postcode and the number of stars it has? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User