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: Clare College is on Trinity Lane. The entrance fee is 2.50 pounds. Is there anything else I can assist you with today? Sentence2: I need a train to cambridge. Get me one that arrives by 13:00 Sentence3: clare college is a college located in the west Sentence4: They all do. Which train would you like? Sentence5: Can I also have the address and entrance fee? Sentence6: I am going to Cambridge and should arrive by 13:00. Can you book for 3 people leaving Wednesday from Peterborough? Also need information on Clare College. Sentence7: i am leaving peterborough Sentence8: Are you going to cambridge or ely? You've said both. Sentence9: I'd like one that arrives by 13:00 on wednesday. Sentence10: all set! Reference # is EH4ICTHP . Anything else today? Sentence11: Well pick pick the one that leaves the latest but arrives by 13:00 and book for 3 people. Sentence12: great, have a good day! Sentence13: No, that is all for today. Sentence14: I will be going to Ely on Thursday. Sentence15: too many options to choose from, can you please help narrow them down? Sentence16: I still have 14 trains. Arriving at :09 and :38 every hour starting at 06:09 and the last is at 12:38. Which one do you want? Sentence17: There are over 500 results. Where are you leaving from? And what day? Sentence18: Yes, I need information on clare college. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User