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's one. The Cambridge Belgry in the west. It has a four star rating. Should I book it for you? Sentence2: Yes I need a chinese place in the cheap range Sentence3: I was able to book a reservation for 3 people for 1 night starting Monday, reference number D8UYVAY8 . Is there anything else you need assistance with? Sentence4: I'm looking for a place to stay that has free wifi and parking. Sentence5: I am sorry but it is not available for those times. Would you like to find another hotel? Sentence6: I'd prefer a hotel, rather than a guesthouse. Sentence7: Can you reserve me a table that the Lucky Star on Monday for 3 people at 13:15? Sentence8: I found cheap guesthouses, is guesthouse what you are looking for? Sentence9: The booking was successful. Your reference number is 96VNO1G8 . Sentence10: There are numerous hotels that match this criteria available. Do you have a specific area you'd like to stay, or a price range in mind? Sentence11: No particular area but I need it to be cheap. Sentence12: Okay, have a great day! Sentence13: Alright, that's all I need today, thanks! Sentence14: Yes please book it for 3 people for 2 nights starting monday Sentence15: How about booking it for 1 night instead. Sentence16: There are 4 in the price range you asked for: Charlie Chan, Rice House, The Lucky Star and the Golden house. Would you like more information on one of these ? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User