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 belgian restaurants in the area. May I suggest Cote? They serve expensive French food and they are located in the Centre. Sentence2: There are many to choose from. I'm partial to The Varsity Restaurant myself, they serve international cuisine. Or were you in the mood for something else? Sentence3: Yes, I'm looking for a particular attraction called ballare. Sentence4: How about international food? Sentence5: I just need the post code. Thank you. Sentence6: I gave that here, what would you like to know? Sentence7: Whatever one you recommend, I just need the phone number and address. Sentence8: The Varsity is located at 35 Saint Andrews Street City Centre and their phone number is 01223356060. Can I help with anything else today? Sentence9: Okay, we've got two restaurants like that, Varsity and Bloomsburg. Do you have a preference? Sentence10: I am looking to find a place to eat in Centre please. Sentence11: Yes, that all I need, thanks. Sentence12: Thank you for using our system today! Sentence13: The postcode for Ballare is cb23na. Will that be all? Sentence14: I would like belgian food in the moderate price range. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System