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: Can I just get the address, star rating, and phone number? Sentence2: The Cambridge Belfry is a 4 star hotel at back lane, cambourne cb236bw. Their number is 01954714600. Sentence3: I need the train for Tuesday departing from Cambridge after 10:30. Sentence4: I recommend the Cambridge Belfry. Will you be booking a room today? Sentence5: I'm looking for a hotel to stay at in the West area of town. Are there any hotels that have free wifi over there? Sentence6: I'd be happy to help you with that. What day do you want to travel? Sentence7: Can I just get the train ID of one of them please? Sentence8: No problem. Goodbye. Sentence9: There are 11 trains of that type, leaving one minute after the hour every hour starting at 11:01. Would you like me to book a ticket? Sentence10: Yes, I have 4 entries for those criteria. What's your price range? Sentence11: The train ID for the 11:01 train is TR2130. Can I help you with anything else? Sentence12: Hi! I need a train to Broxbourne after 10:30. Sentence13: Cheap, it needs free parking also. Sentence14: Thank you for your help. Have a good day! Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System