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: Can I have a reference number for the restaurant? Sentence2: Can you email or fax me the information for my personal reference? Thank you for your assistance. Sentence3: for when and how many in your party please? Sentence4: Nevermind, I wrote the info down. I'll text it to everyone else, it'll be faster that way. Thanks for your help! Sentence5: The post code for Williams Art and Antiques is cb12lj. Sentence6: Do you have a price range in mind? Sentence7: Great I also need to get a taxi that can get me to the restaurant by 11:15 Sentence8: I have 4 expensive restaurants in the centre, cafe uno is a good one. Would you like me to make reservations? Sentence9: The reference number for the restaurant is MXMOHDJ7 . Sentence10: What is their postcode? Sentence11: For 7 people at 11:15 on Saturday, please. Sentence12: I know the place! It's located in the centre and it's free of charge. Sentence13: I also need a taxi. Sentence14: Booking completed! Booked car type : red volvo Contact number : 07479126194 Sentence15: Your restaurant Reference number is : MXMOHDJ7 . And your taxi contact number is 07479126194. Do you have a number I should forward this information to? Sentence16: look out for a red volvo and the contact is 07479126194 Sentence17: Glad I could help. Have a nice day! Sentence18: I would like an expensive restaurant. Sentence19: I am looking for an attraction called Williams Art and Antiques. Sentence20: Ok, that booking was successful, and the table will be reserved for 15 minutes. Sentence21: Caffe Uno will be fine. Yes, I'll need to reserve a table on Saturday. It will be at 11:15 for 7 people. Sentence22: Thank you, I am also looking for an Italian restaurant in the centre. Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System