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! Your car is a grey lexus and the contact number is 07248267753. Sentence2: Can you give me the contact information for The Riverside Brasserie? Sentence3: Thank you. I would also like to book a taxi to commute between the two places. Sentence4: Check the centre, can I get the phone number, entrance fee, and postcode of one? Sentence5: I'd be happy to help you. Which place will you be departing from? I will also need to know the time you'd like to leave. Sentence6: The restaurant should be in the moderate price range. Sentence7: Great, thank you. Are there any colleges in town? Sentence8: There are 5 restaurants that serve modern European food, all located in the centre area. Did you have a particular price range in mind? Sentence9: The Riverside Brasserie and De Luca Cucina and Bar are both in the moderate price range. Do you have a preference? Sentence10: Certainly. They are located at Doubletree by Hilton Cambridge Granta Place Mill Lane, phone number 01223259988. Sentence11: There are 18, actually! Is there a certain area you'd like to check? Sentence12: Christ's College is free. The phone number is 01223334900 and the postcode is cb23u. Sentence13: I will be departing from Christ's College and need to leave by 06:15 please. Sentence14: I am looking for a restaurant that servers modern european food. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System