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: Thanks for your help! Sentence2: You're welcome. Please let me know if you need anything else. Sentence3: We have 5 parks! What area would you like to be in? Sentence4: Cherry Hinton Water Play is located in the east. The address is Cherry Hinton Hall, Cherry Hinton Road. Anything else I can do for you? Sentence5: I have three 4 star hotels in my system. Would you prefer a cheap or expensive one? Also is there any other criteria you are looking for ? Sentence6: No, unfortunately. Please consider other areas. Sentence7: I would need the area and address, please. Sentence8: I don't care about the area. Can you suggest one? Sentence9: Cherry hinton water play is popular. What info would you like on it? Sentence10: You are all booked. Your reference number is 4U7RJ8M6 . Thank you. Sentence11: That sounds lovely. Please book that for 6 people for 5 nights starting Saturday. Sentence12: I am coming to visit cambridge. Would you happen to be able to find me a park to go to? Sentence13: Yes. Can you help me find a hotel? A nice 4-star place, if that's possible. Sentence14: How about guesthouse style places? Are there any of those available? Sentence15: Sure thing! I have two, may I recommend Rosa's Bed and Breakfast? It's in south, is cheap, and has four stars. Sentence16: Do you have a hotel that is in the south with free parking? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System