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: Thank you! I'm actually looking for places to go in town, some type of entertainment. Sentence2: I booked you a grey audi from nusha to j restaurant, to pick you up at 8:15. Contact number is 07366723589. Is there anything else I can do? Sentence3: it should leave by 08:15 Sentence4: How about nusha? It's in the south. Sentence5: No, I need a taxi from Nusha to the restaurant. Sentence6: No, thank you. That's all I need today. Sentence7: I don't have any information on the entrance fee, but their postcode is cb17dy. Can I help you with anything else? Sentence8: I'm looking for a cheap restaurant in the centre. Sentence9: I have 15 different restaurants matching your preferences, would you like a specific type of food? Sentence10: I hope you have a great stay. Goodbye. Sentence11: That sounds great. Can i get the postcode and is there a entrance fee? Sentence12: No, any one will be fine. Will you pick one and send me the phone number and postcode? Sentence13: Okay, what time do you need the taxi for? Sentence14: Okay, what time would you like to arrive in Nusha? Sentence15: The phone number to J restaurant is 01223307581. Sentence16: Yes, I need a taxi to get from the restaurant to Nusha. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User