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: could you give me information about the cherry hinton village centre. Sentence2: I don't have a preference of area as long as it's an expensive restaurant. Sentence3: Your welcome. Is there anything else I can look up for you? Sentence4: Their phone number is 01223576412. What part of town would you like to dine in? Sentence5: Your booking was successful. The table will be reserved for 15 minutes. The reference number is 3SOJSHQN . Sentence6: What is it's phone number? Also are there any expensive British restaurants in town? Sentence7: Yes, it is a multiple sports venue located in the east part of town, post code cb19ej. The address is Colville Road, Cherry Hinton. Sentence8: Thank you that is all I needed. Sentence9: Thank you so much. Sentence10: enjoy your stay in cambridge Sentence11: Sounds good! I need a table for just myself at 11:30 on monday. Sentence12: There are a number of expensive british places in town. On the east side, there is the grafton hotel restaurant. Would you like to make a booking there? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System