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: No, that's it for now. Sentence2: I'd like to look at the one in the west, please. Sentence3: That place goes by the name of meghna, the address is 205 Victoria Road Chesterton, they can be reached at 01223727410, would you like me too book you? Sentence4: No thanks. I don't need a reservation yet. I am also looking to find a great place to do some boating. Sentence5: Hello, I am looking for a place to dine. I'd prefer it to be moderately priced and serve Indian food. Sentence6: Their postcode is cb43lf. Would you like a reservation? Sentence7: It was a pleasure serving you today. Have a wonderful stay! Sentence8: No, where would you suggest? Sentence9: I have several options to choose from. Is there a particular area you want to go boating? Sentence10: How about Camboats in the East? Their address is the plough, green end, fen ditton. Sentence11: The postcode is cb43lf, anything else? Sentence12: That sounds good. Can I get the postcode please? Sentence13: Can I please have their postcode? Sentence14: We have 4 moderately priced Indian restaurants - 2 in the east, 1 in the north, and one in the west. Which area are you interested in? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User