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'd love some Scandinavian food? Sentence2: yes! there is anatolia or efes restaurant. Sentence3: Thank you that is all I need today. Sentence4: Yes that sounds great. I need to book one for 4 people. Sentence5: efes restaurant is at King Street city centre, postcode is cb11ln and the phone is 01223500005, can I help with anything else? Sentence6: I'm sorry, but there are no scandanavian restaurants that are moderately priced. Would you like to change your price range or the type of food? Sentence7: Can you help me find a restaurant that is moderately priced? Sentence8: What time did you want to travel? Sentence9: Sure, you have a cuisine I'd like to eat, or area of town you want to dine in? Sentence10: I want to leave on staurday to go to kings lynn Sentence11: Okay, the TR2840 leaves at 17:11 and arrives by 17:58. Would you like me to book this for you? Sentence12: I have you booked. Reference number is : U8RPPC0C . Sentence13: You're welcome! Thanks for contacting Cambridge TownInfo centre. Have a great day! Sentence14: Could I get the contact info for that? Sentence15: I would like to leave Cambridge to arrive in Kings Lynn by 18:15. Sentence16: The total came 31.36 GBP payable at the station. Your reference number is CKK48SQO . Anything else? Sentence17: Yes, let's book a table for four there at 13:00 on the same Saturday. Sentence18: What about Turkish food? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System