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: Do they have free parking? Sentence2: We have 4 matches, do you have a price range in mind? Sentence3: I need a hotel in the west part of cambridge. I don't care if it has internet. Sentence4: The address for Queens' College is Silver Street. Can I help you with anything else today? Sentence5: That is no problem, the cambridge belfry is a better price and should meet your needs, would you like more information? Sentence6: Yes please thank you Sentence7: i suggest the queens' college. can i give you the address? Sentence8: There is the Huntingdon Marriott hotel would you like me to book it for you? Sentence9: No, just the phone number and address. I am also looking for places to go in the same area as the hotel. Sentence10: I have no preference, just something in the same area as the hotel. Sentence11: The phone number is 01954714600, address 01954714600. What type of attraction would you like to go to? Sentence12: I need the postcode as well. Sentence13: Thank you for choosing Cambridge TownInfo Centre to assist you. Have a good day! Sentence14: Yes expensive please. Just book me a room and send me the reference number. Sentence15: Their postcode is cb39et. Is there anything else I can assist you with? Sentence16: Yes, the bell fry has free parking. Would you like me to book a room for you? Sentence17: Nope. That was all I needed. Thank you. Sentence18: No. Actually sorry. It should be a cheap hotel in the west. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System