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: Great! Can you also book me a taxi from All Saints Church to Fitzbillies by 15:15? Sentence2: Fitzbillies is a fine British restaurant located at 51 Trumpington Street City Centre in postcode cb21rg. Would you like to book a table there? Sentence3: The attraction should be in the centre. I need the entrance fee, phone number, and attraction type Sentence4: Great. Thank you so much! Sentence5: There are 44 attractions in the centre, what type of attraction are you interested in? Sentence6: Thank you for the information. I do have one other request. I am looking for information on a restaurant that caught my attention called Fitzbillies. Sentence7: I'm happy to be of service. Enjoy your time in Cambridge! Sentence8: I'm actually looking for an attraction in the center of town. Sentence9: You bet! The car type I booked for your taxi is a white volvo and the contact number is 07738755446 Sentence10: I would suggest all saints church. It is an architecture attraction. Their phone number is 01223452587 and the entry is free. Sentence11: Ok. I have your table booked for Tuesday at 15:15. Your reference number is B6IJH1ND . They will hold the table for 15 minutes. Sentence12: Where can I find a restaurant located in the Cambridge centre? Sentence13: Yes. I would like it for 1. 15:15 on Tuesday. Sentence14: There are 69 Restaurants in Centre. What type of food and price range? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System