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: book for 1 person and get me reference number Sentence2: Okay. The TR0094 meets your criteria. Would you like more information or would you like to book tickets? Sentence3: Yes, the west please. Sentence4: no thanks that is enough for today Sentence5: we have quite a few in the west, how can I help you? Sentence6: I am looking for a train leaving after 16:15 on friday. Sentence7: We have five museums in the west area. I would recommend the Lynne Strover Gallery. Would you like information on some of the other museums? Sentence8: The train should depart from cambridge and arrive at leicester. Sentence9: Where will you be traveling from and to? Sentence10: The lynne strover gallery is located at 23 high street, fen ditton, postcode cb30aq, and is free. May I help you with something else? Sentence11: Yes please. I'm looking for a good museum in town. Can you suggest one that you like? Sentence12: Okay, your ticket is booked! Reference number UYWWVHK8 . Can I be of any further help? Sentence13: You're welcome! Bye! Sentence14: Are you looking for one in a particular area? Sentence15: Can you give me the postcode, entrance fee, and address of one? Sentence16: Can you please provide me a list of museum options? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User