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: I don't really care which type of food. You can just pick one and book for 5 people at 12:30 on thursday. Sentence2: I'm looking for a restaurant in the centre of Cambridge which is pretty cheap in terms of prices. Sentence3: We have many places that meet that criteria, is there a type of food you would like to eat? Sentence4: I have booked a table for Dojo Noodle Bar for 5 people, reference number 14M7PHJH . The table will be reserved for 15 minutes starting at 12:30. Sentence5: Yes. For the same group of people for 3 nights starting on the same day Sentence6: Yes that's all. Thank you very much. Sentence7: The Cambridge Belfry is a hotel in the west. It is relatively cheap, has 4-stars and offers free internet and parking. Would you like to book a room there? Sentence8: I am also looking for the Cambridge Belfry. Sentence9: cheap food is preferred, but i'm not picky. Sentence10: There are 15 places to choose from, what kind of food are you looking for in particular? Sentence11: You are very welcome. Thank you for for calling the Cambridge Towninfo Centre. Have a great day. Sentence12: I have successfully booked a room for you at the Cambridge Belfry for 3 nights starting from Thursday for 3 people. Your reference number is MGOPZNPJ ..Would that be all for you? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User