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: Sure, it is a 4 star guesthouse located at 154 Chesterton Road. The postcode is cb41da and you can call them at 01223353888. Is there anything else you need? Sentence2: What are the prices like there? Sentence3: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence4: Thank you, I am also looking for a hotel on the north side. Sentence5: Yes, a taxi, I want to leave the attraction and go to the hotel by 22:00 Sentence6: Any area is fine. Do you have a favorite? Maybe we can check that one out. Which one do you like? Sentence7: Acorn Guest House is a moderately priced hotel. They provide internet and parking. Would you like to book something? Sentence8: Broughton house gallery was great the last time I was there and I think you'll enjoy it as well. It even has no entrance fee. Sentence9: I like a guesthouse in the moderate price range. Sentence10: thats all I needed, thanks Sentence11: I am showing a listing of 23 different museums in various areas of cambridge. Do you have a specific area you would like to visit? Sentence12: There are 5 hotels on the North side. Are there any specific accommodations you were looking for? Sentence13: Could you give me the postcode, phone number and star rating of the guesthouse? Sentence14: acorn guest house would be nice for you Sentence15: You're booked in a black Audi, contact number 07701261182. Can I help you with anything else today? Sentence16: Awesome, can I get the phone number, postcode and area for that? Sentence17: The Broughton House Gallery is in Centre. The phone number is 01223314960, and the postcode is CB11LN. Sentence18: Hello, I'm looking for an museum. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System