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: Cambridge artworks is wonderful! They are located at 5 greens road cb13ef. There phone number is 01223902168. Sentence2: Yes, there are 4 museums. Three are free and one has a 5 pound entrance fee. Are you looking for a gallery? Sentence3: What do you recommend? Sentence4: Can you help me find a place to go in the east? Sentence5: Thank you. That's all I needed. Sentence6: I'm also looking for a place to eat. I don't mind where, but I want an expensive chinese place. Sentence7: Ok. I booked a taxi for you. It is a blue audi and the contact number is 07155610417. Sentence8: You're welcome, goodbye! Sentence9: A recommendation would be fine. Can I get the area they're in and post code? Sentence10: I'd also like to book a taxi between the two places. I'd like to leave the restaurant by 2:30 Sentence11: There are 9 options that fit your criteria. Would you like a recommendation or would you like to narrow it down further? Sentence12: We have 5 very nice attractions in the east, do you have an idea of type of activity that would best match your needs? Sentence13: I recommend yu garden. It is located in the east. The address is 529 Newmarket Road Fen Ditton. Postcode cb58pa. Sentence14: Is there a museum I could go to on that side of town? If so, please provide phone number, address, and postcode. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System