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, please book the hotel for 5 people starting Wednesday for 4 nights. Sentence2: I would recommend the 4 star Hungtington Marriott Hotel. It does have free parking and internet. Would you like to make a reservation? Sentence3: Yes, I can help with that. Are you staying at in a specific area of town and do you have a price range in mind? Sentence4: Your booking went great! Here is your reference number XGBQHC6Y . Is there anything else I can help with? Sentence5: Thank you goodbye Sentence6: Train TR2052 leaves Cambridge at 19:09 and arrives in Leicester at 20:54. Would you like me to book you a ticket or would you prefer something earlier? Sentence7: Yes, I'm also looking for a place to stay, preferably somewhere with free wifi. Can you assist me with that? Sentence8: I'll be leaving Leicester on Wednesday and I need to arrive in Cambridge by 21:30. Sentence9: Hello! I'm looking for a train. Can you help? Sentence10: I'd be happy to help with your request, first I'll need to know where you are departing/arriving and what day will you be departing? Sentence11: I ned it to be a hotel in the west please. Sentence12: No, I think that's all for today. You've been a great help. Thanks. Goodbye. Sentence13: Booking was successful your reference number is : ZK23HSL9 . Can I help you with anything else? Sentence14: Yes, please book that train for 5 people. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User