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: There is a train leaving Birmingham New Street heading to Cambridge at 13.40. Sentence2: I don't need train booking. I do need to find a cheap Spanish restaurant, though. Sentence3: That's all I needed, thank you! Sentence4: Sure! The Train ID is TR7509. The price is 75.10 poinds. It arrives by 16.23. Would you like for me to book it for you? Sentence5: Your welcome. Please let us know if we can assist you in the future. Sentence6: I am looking for a Thursday departure for a train going to Cambridge. Sentence7: I'd like to book a table for 3 at 18:15 on Thursday. And if possible, I'd like a reference number. Sentence8: I am looking to depart from Birmingham new street after 12:45 Sentence9: I have booked that for you with the reference number D3QVNLWT . Is there anything else I can help you with? Sentence10: Great can I get the train ID, price, and arrival time for that one? Sentence11: To help you better with your travel plans, where are you planning on departing from? Sentence12: What day and time would like for me to book? Sentence13: That is all, thank you very much. Sentence14: La Raza is a cheap Spanish restaurant in the center of town. Do you need their address or perhaps I could make a reservation for you? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System