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: There are no cinemas to the North. Sentence2: Yes, I need a reservation. Sentence3: How about The Cambridge Belfry, in the West part of town? Sentence4: There are no museums in the north but there is a park, would you like information about it? Sentence5: Is there a cinema in the North? Sentence6: I'm sorry, there are no hotels that match your preferences. Sentence7: Would you like me to book a reservation for you? Sentence8: The only thing I have that meets your criteria is a guesthouse called the Worth House. It is 4 star rated, in the north and cheap. Sentence9: I really want a hotel. Are there any cheap ones in town? Sentence10: Actually, I was looking for a 4 star hotel, not a guesthouse. Sentence11: No thank you but I do need a place to stay that has a star of 4 and in the moderate price range Sentence12: Is there a museum to the North? Sentence13: That will be fine. Sentence14: How about a cheap one then I am not picky Sentence15: There are several guesthouses available, Acorn guesthouse is highly recommended. Shall I book a room for you? Sentence16: Thank you, I need to know the number of days, people and when you want to check in. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User