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: Yes, there are 5 Indian restaurants in the west. May I recommend Tandoori Palace on Histon Road, Chesterton. Sentence2: Great I'm also looking for an expensive restaurant in the west part of town Sentence3: Their address is 68 Histon Road Chesterton and the phone number is 01223506055. Will there be anything else I can assist you with today? Sentence4: Sure. I'm leaving from Kings Lynn sometime after 12:45 on Monday. Do you have anything? Sentence5: I have no Italian food available. Sentence6: I have several. What type of food are you looking for? I have British, Chinese, Indian and Gastropub food to choose from in this price range. Sentence7: OK, thanks for using Cambridge TownInfo centre. Have a great day! Sentence8: Ok no problem. Is there a place that serves Indian food instead? Sentence9: Okay, you are booked for 7 people on TR4329, your reference number is S9WXSL0O . Sentence10: The earliest train after that time is TR4329. It leaves at 13:11 and arrives in Cambridge at 13:58. Would that work for you or would you like a later train? Sentence11: That sounds great. May I have the address and phone number for the Tandoori Palace, please? Sentence12: That will work. Can you book 7 tickets for that one please? Sentence13: May I ask where you are leaving from? Sentence14: It should serve Italian food. Sentence15: Hi, I'm looking for a train to Cambridge on Monday Sentence16: Thank you. That is all that I need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User