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 three Indian food restaurants that fit your request. They are Kohinoor, The Gandhi, and Mahal of Cambridge. Would like to make a booking at one of them? Sentence2: No, not really. How about Indian food instead of Middle Eastern? Sentence3: Yes, Limehouse is 4 stars. Would you like me to book? Sentence4: I didn't find anything within that range. Would you be willing to increase the price or go outside of the city centre? Sentence5: How about the limehouse? Sentence6: You are welcome. Sentence7: Is Limehouse 4 stars? Sentence8: Do you have a cuisine or area in mind? Sentence9: No just the address, postcode and phone number of the one you recommend. Sentence10: There are 21 guest houses that meet your specifications. Tell me about some of your other preferences? What area of town are you interested in? Sentence11: I also need a place to stay. I need somewhere that is a guesthouse and includes free parking. Sentence12: Thank you! You as well! Sentence13: I recommend the Gandhi whose phone number is 01223353942 and they are located at 72 Regent Street City Centre with post code cb21db. May I help you with anything else? Sentence14: Have a wonderful day! Sentence15: I can do that myself. Thank you for the information. Sentence16: Sure, their phone number is 01223300552 and the price range is moderate. Would you like to book a room there? Sentence17: I would like some Middle Eastern food, preferably in the cheap price range. I'd also like to be in the Centre. Sentence18: Can you give me the phone number and price range? Sentence19: Area does not matter but something with 4 stars. Sentence20: I am looking for some restaurant recommendations. Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System