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: Wandlebury's address is Wandlebury Ring, Gog Magog Hills, Babraham, postcode cb223ae. No entrance fee. La Mimosa is located in the city centre, address is Thompsons Lane Fen Dilton. Anything else? Sentence2: Have a great day, goodbye. Sentence3: Could you book a table for me please? I need a reservation for 8 people at 15:45 on Friday. Sentence4: Can you please provide me with the postcode, entrance fee and address of a park in the south? Sentence5: How about getting me the address and postcode and entrance fee for The Wandlebury. I also am looking for a restaurant called La Mimosa. Sentence6: Thanks I will. That is everything I needed. Sentence7: Hi there, can you help me find a park to visit please? Sentence8: We have 79 parks in the Cambridge area, what area of Cambridge would you like to go to a park in? Sentence9: All right, your table is reserved. The reference number is SX6ZASAF . Sentence10: There are two parks in the south, The Wandlebury and Sheeps Green. Which are you more interested in? Sentence11: You're welcome. Enjoy your time in Cambridge. Sentence12: That's all I need, thanks for the help! Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System