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: 3 stars, phone 01223366611, address gonville place. Sentence2: I have no preference for the area, but I would like something that includes free wifi and is in the expensive price range, please. Sentence3: Hi, I'm looking for a train that departs from peterborough and arrives by 10:30. Sentence4: There are plenty of options available to you. Would you like to narrow it down by area, price range, stars, or type? Sentence5: Could you check to see if there are any expensive hotels then? Sentence6: The price is 16.50 pounds. May I help with anything else? Sentence7: There is the Gonville Hotel in Centre that meets your criteria. Would you like me to book that for you? Sentence8: Wonderful. Thank you for all your help. Sentence9: I don't need to book but would you give me the star rating for the Gonville Hotel plus the address and phone number. Sentence10: I'd like a guesthouse that includes free parking. Sentence11: You're welcome. Have a great day! Sentence12: Okay, great! Do you have a certain area in mind? Sentence13: Where will you be traveling to? Sentence14: I am leaving on Friday. What is the cost please? Sentence15: I am traveling to Cambridge. Sentence16: Yes, I need to find a place to stay. Sentence17: I'm sorry. There aren't any expensive guesthouses available for a reservation. Would you like me to check for a cheap or a moderately priced one? Sentence18: What day are you taking the train? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User