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: Yes one in the same area and price range please. Sentence2: I apologize the Bedouin does not have any open seats for that day and time. Would you like me to try another restaurant? Sentence3: I would recommend Papadoux they are very expensive and right in the center of town Sentence4: So happy we could be of service today. Enjoy your time in Cambridge! Sentence5: Yes I am looking for an expensive place to eat that is located in the city center. Sentence6: Okay I was able to book you into the Kymmoy, an expensive Asian restaurant in the center of town and your reference number is YCQWEGOS . Sentence7: Hmm. I feel like discovering something new. Which restaurant would you recommend? Sentence8: There are quite a few restaurants in the center. What kind of cuisine are you interested in? Sentence9: Great! Thank you so much for your help. Sentence10: I'm sorry, Papadoux is not coming up. There is an expensive African restaurant called Bedouin in city centre. Would you like me to try that one instead? Sentence11: Yes, or any in the same expensive range and the centre area. Sentence12: That sounds great. Could you book a table for one at 11:15 on Friday? Sentence13: No thank you for all your help. Sentence14: You're very welcome. Is there anything else I can help you with today? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System