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: I'm also looking for a place to stay. Sentence2: The Cambridge Contemporary Art museum is a fantastic place to visit. It's located at 6 Trinity Street and admission is free! Do you need more information? Sentence3: There is architecture, boats, colleges, museums, and many other things. Sentence4: That will be all for today. Thanks. Goodbye. Sentence5: Okay, if the lack of parking isn't a dealbreaker, you might enjoy cityroomz. Their number is 01223304050. Shall I book a room for you? Sentence6: Recommend something that's in the center of town for me. Sentence7: What area would you like to stay in? Sentence8: I have booked your taxi. Be expecting a red Honda. Their phone number is 07543221637. Sentence9: Free parking would be nice but it is not a necessity. Sentence10: I want to stay in the center of town in a 0 star hotel that is moderately priced and has free parking. Sentence11: Yes please. I'll need to for 8 people for 4 nights starting Wednesday Sentence12: There's not an exact match to fit your needs. There's a hotel without free parking available. Or, if you need the free parking, would a cheap guesthouse work instead? Sentence13: Yes, I also need a taxi from the hotel at 16:30. Sentence14: Done! Your reference number is 07Z05P6U . Do you need anything else? Sentence15: Thank you for using our system today! Sentence16: I am looking for places to visit in downtown Cambridge. What are some popular attractions? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System