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 prefer something in the north. And a guesthouse would be better. Sentence2: Da vinci pizzeria is located at 20 Milton Road Chesterton, postcode cb41jy and their phone number is 01223351707. Sentence3: I found two cheap places in the north. 1 indian on Victoria Ave and 1 italian at 20 Milton Rd both in Chesterton. Is that all? Sentence4: Please book it for 1 people for 2 nights starting from friday. Sentence5: No, but free wifi and four star please. Sentence6: You've been successfully booked and your reference number is TJZMY6L9 . Is there anything else you need? Sentence7: Enjoy your stay! Sentence8: Let's try the Italian one. Can I get the postcode and phone number for it, too? Sentence9: No, that would be all. Thanks. Bye. Sentence10: Great, thank you for all your help today. Sentence11: Are there any 4-star places to stay that also have free wifi? Sentence12: Yes, there are 21 places found. Do you have a specific area in mind? Sentence13: Anything else I can help with? Sentence14: The Acorn Guest House is a nice 4 star guesthouse in the north with free wifi. Would you like me to book a room? Sentence15: Yes, I'm also looking for a cheap place to eat that's also in the north. Sentence16: I have eight places, do you have a price range in mind? Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System