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 recommend allenbell. It has 4 stars and is in your price range. May I book it for you? Sentence2: Sure the address is 1 wheeler street,postcode is cb23qb and the phone number is 01223842725. Sentence3: I have made your reservation for the Allenbell for 2 people for 5 nights starting on Tuesday. Your reference number is PYY0CNUX . Is there anything else I may assist you with? Sentence4: Yes, that would be great. I'll need it to start on Tuesday and go for 5 nights. It will be 2 people. Sentence5: Yes, Kambar is a nightclub in the centre of town. Can I give you some information on it? Sentence6: I'd like to find out if there's a particular attraction in Cambridge called kambar Sentence7: I'm sorry, I don't know of any expensive guest houses. Can I look for something else for you? Sentence8: Yes, there are a few of them. What price ranger would you like? Sentence9: Yes please, can I get the postcode, phone number, and address? Sentence10: I'd like a cheap one if that's fine. Sentence11: Thank you for calling. I hope you enjoy your stay. Goodbye. Sentence12: Hmm. Do you have any guest houses in the east with free wifi? Sentence13: I am also looking for a really pricey Guesthouse. Sentence14: No thanks. That takes care of all I needed. Goodbye. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System