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: Unfortunately, we do not have any restaurants in the city that offer sri lankan food. Is there a different type of cuisine you want to try? Sentence2: Booking completed! A white lexus will be picking you up. Their Contact number is 07650851838. Can I help with anything else today? Sentence3: I'm sorry, it's in the cheap price range. Nearby you have Cineworld Cinema, Nusha, Tenpin, Byard Art, The Place, The Junction, and two parks. Did you want to book that table? Sentence4: Thank you for contacting us have a nice day. Sentence5: Could I get a price range for the restaurant first? Could I also get a short list of nearby attractions to the restaurant you recommend? Sentence6: That sounds good, can I get the address, phone number and price range please? Sentence7: That's going to be it, thanks for your help. Sentence8: It will only be me. Sentence9: The phone is 01223244277and the address is Cambridge Leisure Park Clifton Way Cherry Hinton. Would you like to book a table now? Sentence10: cineworld cinema is a cinema, and there is no information available on the entrance fee. The phone number is, 00872208000 if you'd like to call them to find out. Sentence11: I have 3 chinese restaurants in the south. The lucky star is a favorite of mine. Sentence12: I'm going from the cinema to the restaurant. I want to leave the cinema by 16:30. Sentence13: I'm looking for a restaurant serving sri lanken food in the south. Sentence14: For how many people? Sentence15: Ok I need to get a taxi Sentence16: How about a chinese restaurant? Sentence17: What is your departure and arrival sites? Sentence18: I'd like to find a attraction in the same area of town as the restaurant. Can I get the attraction type and entrance fee? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User