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: Awesome. Could you also help me find a restaurant in the centre? Sentence2: Train TR7850 arrives at 12:08, but that there are trains arriving earlier. Which one could you rather take? Sentence3: Wow, I cant believe that I got a person this quickly. I need a train to cambridge. I want to get there buy tuesday at 12:30. Sentence4: I can recommend the oak bistro in the centre of town, they have british food, and are in the moderate price range. Would you like to make a reservation? Sentence5: American food and I need a booking for same group Sentence6: I'll be leaving from london kings cross. Sentence7: No, you've been a great help today. Thank you. Goodbye. Sentence8: I would like to take this train. Thank you. Sentence9: Yes if there are any more options, why don't you try and suggest on for me, which ones do you like? Sentence10: I'm happy to help. Where will you be departing from? Sentence11: Yes I would like a reservation for one at 19:30 Sentence12: Okay, I am glad to have assisted you. Goodbye. Sentence13: it should be in the moderate price range. Sentence14: Your booking was successful. The table will be reserved for 15 minutes. Reference number is : 4ZAIQ7NX . Is there anything else I can help you with? Sentence15: There are 69 choices to select from. Can you narrow it down to the type of food and price range? I can then search again for you Sentence16: I am looking for something in the moderate price range in the Centre. Is there anything that meets that criteria? Sentence17: Yes please! I'd like a table for one person at 20:30 on tuesday Sentence18: We do have openings at the oak bistro if you are interested. It is located in centre with moderate price range. Sentence19: How about a table at 19:30? Can you reserve that please? Sentence20: Reference number is : UKTVT9CY . the total fee is 23.6 GBP payable at the station . Sentence21: I apologize but that doesn't seem to be available either. Would you like me to try a different restaurant? Sentence22: What type of food do you like? Sentence23: The only one I find with American food is in the expensive range, it's the gourmet burger kitchen. Is this something you would be interested or would you prefer something else? Sentence24: I am sorry, I am unable to book that right now. Is there anything else I can help you with? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System