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: I would like free parking, if available. Everything else is not really an issue. Sentence2: I need a restaurant in the same area as the hotel. What do you recommend? Sentence3: That is all that I need. Sentence4: I think you would love the Avalon. Would you like me to book it? Sentence5: I'm sorry, I was just told I should go ahead and make the reservation. Do you have a hotel that has the same 4 star rating but in the north? Sentence6: We have many great places in town. Do you have a price range or area in mind? Sentence7: You are all set then, have a wonderful day. Sentence8: Yes, book it for 6 people for three nights, starting on Wednesday! Sentence9: Booking was successful. Reference number is : 43FLT7MR . Sentence10: I am looking for a place to stay. Do you have any recommendations? Sentence11: Allenbell is a guesthouse in the east, and despite it being in the cheap price range has a 4 star rating. Would you like a reservation? Sentence12: No thanks, just gathering information for now. Sentence13: anything else i can help you with? Sentence14: Is that is the mid price range? Sentence15: There are 9 restaurants in the north. I recommend hakka. Sentence16: Its in the expensive range. Do you want me to search for something else? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User