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'm sorry, but I'm experiencing some errors. Can you please restate your request? Sentence2: Yes but I'm also looking for an expensive restaurant that serves British food in the area. Sentence3: Sure,I am looking for a restaurant serving british food in the expensive price range. Sentence4: How about the Travellers Rest, in West Cambridge? Sentence5: Yes, limehouse has both internet and parking. Would you like me to book you a room there? Sentence6: I certainly can! Your booking is confirmed and your reservation number is 8VQLVP78 . Sentence7: I need information on the hotel Limehouse please. Sentence8: Great. Thank you very much for your help. That will be all. Sentence9: Thanks can I please have the reference number? Sentence10: It appears the screen is locked. Give me a moment. Let me see. Sentence11: Could you please tell me if free parking and internet is available at the Limehouse? Sentence12: Great! Thank you so much. Sentence13: You are very welcome. Thank you for contacting Cambridge Towninfo Centre. Have a great day. Sentence14: Limehouse is a guesthouse on the north side of town. It has a moderate price range and is 4 stars. Would you like to book at this guesthouse? Sentence15: Is there anything else I can help you with? Can I recommend a nearby attraction? Sentence16: I will book the Limehouse for you. Sentence17: That sounds perfect. Could you book me a table for 5 at 1300 on tuesday. Sentence18: Once you find a restaurant, I want to book a table for 5 people at 13:00 on tuesday. Please don't forget my reference number. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User