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: Sure, I can get you the addresses. There are five different colleges. Did you have specific ones in mind? Sentence2: Nothing in particular. Just give me the area, postcode, and phone for one of them. Sentence3: Sure, the address is 68 Histon Road Chesterton, and the phone number is 01223506055. Sentence4: Their phone number is 01223336233 . Sentence5: I'm here to visit some colleges, can you please help me find the addresses of some of them? Sentence6: No thank you. I would just like the phone number and address. Sentence7: The tandoori palace is on the East side. Would you like me to reserve for you? Sentence8: I also need a place to eat called tandoori palace. Sentence9: Churchill college is located in the west postcode cb30ds. Is there anything else I can help you with? Sentence10: Thank you for your help. Have a great day. Sentence11: you're very welcome. you have a good day too. Sentence12: I will need the phone number for them as well please. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User