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: Alright, enjoy the rest of your day. Sentence2: There are no 4 star hotels in the center area. Sentence3: Just the four star and hotel, tell me what my price options are with that one. Sentence4: What would you like to pay per night? Sentence5: I need a 4 star hotel as well. Sentence6: cheap and moderate are the price ranges would you like to book a room? Sentence7: That sounds pretty neat. My daughter is really into the arts. Can I get their phone number please? Sentence8: Any would be fine. I just need to know the price range. Sentence9: Hmm are you sure about that? Can you check again? Sentence10: Can you suggest one in that area? Sentence11: Thanks I only needed the price ranges for those hotels. Have a good day. Sentence12: Absolutely! The phone number is 01223902168. Can I help you with anything else? Sentence13: Are you looking for lodgings near Cambridge Artworks, or in a different part of the City? Sentence14: Cambridge Artworks is a museum in the east located at 5 Greens Road and has no entrance fee. Anything else I can assist you with today? Sentence15: I'd rather stay in the centre if possible. Sentence16: Thank you, what is the address? Sentence17: Can you give me information about Cambridge Artworks, please? Sentence18: Im sorry, I am the manager and it is training day, we have two four star hotels in the centre university arms is expensive and alexander bed and breakfast is cheap? Sentence19: I am unsure of the address, can you look it up? Sentence20: I double checked. There are no 4 stars hotels in the center area. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System