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: Thanks. Next can I get some info on theatre's in the centre? Sentence2: I was able to book a table for two at the restaurant. Your confirmation number is DI0KD8LZ . The table will be reserved for 15 minutes. Sentence3: I would also like to know about any attractions that is in the centre of town that is a theatre type. Sentence4: Can you recommend one for me please? Sentence5: There is also Cambridge Arts Theatre, Mumford Theatre, and The Cambridge Corn Exchange. Sentence6: I'm sorry, but I'm not showing any Muslim restaurant listings. Is there another type of food you would like to try? Sentence7: Could you give me their address? Sentence8: The cambridge arts theatre is located at 6 saint edward's passage. postcode cb23pj Sentence9: sure when would you like to eat? Sentence10: I'd like to book a table for two around 19:45 on wednesday. Sentence11: I have four places there, what would you like to know? Sentence12: can you book the backstreet bistro for me ? Sentence13: You may help me by finding a Muslim restaurant for me to eat at please. Sentence14: Could I get the address for the Cambridge Arts Theatre? Sentence15: The address is park street. Is there anything else I could help you with? Sentence16: ADC is a good place, what would you like to know? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System