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: The postcode is cb30nd. Would you like to book a room now? Sentence2: What is the star rating and is free parking available? Sentence3: Yes can you please help with that? Sentence4: Can you give me the postcode? Sentence5: Absolutely. How many people, what day are you arriving, and how many nights will you be staying? Sentence6: enjoy your stay! Sentence7: It's 4 stars and has free parking. Would you like a room? Sentence8: The TR8600 Departs Norwich at 18:16, and it takes 79 minutes to get to Cambridge. The fare is 14.08 GBP per ticket. Is there anythig else you want to know? Sentence9: I need a place to stay in the west. Sentence10: Finches Bed and Breakfast is within your chosen price range and it is located at 144 thornton road. Sentence11: I would like to find a cheap guesthouse. Sentence12: How long is the travel time, departure time and what is the price? Sentence13: No actually I need to find a train to Cambridge from Norwich on Saturday arriving by 19:45. Sentence14: Okay the TR8600 arrives by 19:35. Would you like tickets? Sentence15: We have several places to stay that you may like in the West. Do you have a specific price range or star rating in mind? Sentence16: Nope, that's it. Thanks! Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User