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: Trinity college please. Sentence2: I am looking for a place to eat that serves gastropub food in the centre. Sentence3: Yes it is. Would you like to book it? Sentence4: Is it expensive? Sentence5: No that is all I need, thank you. Sentence6: No, thank you. I just need the address, please. Sentence7: The address is 2 Sturton Street City Centre. Sentence8: I also am looking for places to go in the same area as the restaurant. I would like to visit a college. Sentence9: We have many fine colleges in the center, such as Christ's College, Corpus Christi, Jesus College, and Trinity College. Would you like more information about one of them, or perhaps others? Sentence10: We have 3 great gastropubs in the center. I recommend the Backstreet Bistro. Sentence11: Okay. Please let us know if you need anything else during your trip to Cambridge. Sentence12: Trinity college is located on trinity street, and the phone number is 01223338400. The entrance fee is 1 pound. Do you need any additional information? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System