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: Since I'll already be in town, I'd like to check out some colleges in the same area as the Fitzbillies Sentence2: I have 3 places to choose from. All are expensive. I have Fitzbillies, The Cambridge Chop House and Midsummer House Restaurant. Can I reserve a table for you? Sentence3: Thank you for using our system today. Sentence4: British food. And some where in the Centre. Sentence5: What type of food would you like? Sentence6: Fitzbillies sounds unique, can you book me for 5 people at 17:00 on tuesday? Sentence7: What area and what price range would you be interested in ? Sentence8: The phone number is 01223331100 and the postcode is cb21st. Is there anything else I can help you with? Sentence9: No, as long as it is in the same area as the restaurant. Sentence10: Can I recommend king's college,it is a beautiful college in the centre of town. Sentence11: Hi, I am traveling to Cambridge and am looking forward to trying some local restaurants. Can you help me with a great place to dine? Sentence12: I have many,does it matter if there an entrance fee? Sentence13: no, that will be all. goodbye. Sentence14: I am looking for an expensive place in any area. Sentence15: What is the postcode and phone number? Sentence16: I have your reservation for tuesday at 17:00 with 5 people, your reference number is UAZUXKIR . Can I help you with anything else? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System