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: Your restaurant reference number is AVOXTSPM . For a museum, I recommend the broughton house gallery at 98 king street. Sentence2: No particular type of food, but something moderately priced please. Sentence3: Would you like to try the copper kettle? It serves British food. Sentence4: I am looking for a restaurant in the centre of town. Sentence5: That sounds good. Could you book a table for 4 people at 19:15 on Wednesday? Sentence6: Alright, that seems like it will be perfect! Could I have the address for it, please? Sentence7: OK great, that's all I needed thank you! Sentence8: There are many restaurants in the centre of town. Is there a specific food type and pricerange you are looking for? Sentence9: The address is 98 king street. Sentence10: You're welcome. Goodbye. Sentence11: Hi, I've booked a table for 4 at the Copper Kettle! Will that be all? Sentence12: Could I get the reference number? Also looking for place to go in town. What museum do you recommend? Please send address. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System