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: That narrows the selection to six. Would you like me to suggest one? Sentence2: No thank you thats all I need Sentence3: Yes, it's for a special occasion, so something expensive would be preferred. Sentence4: Can you please recommend one and book it for my party? Sentence5: I will need to know your departure and destination before reserving. Sentence6: There are 9 restaurants in the city centre that serve Indian food. Do you have a preference in price range? Sentence7: Yes, that is correct, 12:45 Tuesday for 6. Sentence8: Thanks, can you help me find a train to get there as well? Sentence9: Thanks for using our service, and goodbye! Sentence10: Please, if you can, find me a restaurant in the centre that serves Indian food Sentence11: There are six different restaurants in the area that can reserve you the table that you require. Your choices are Curry Garden, The Golden Curry, Saffron Brasserie, Panahar, Curry King, and Curry Queen. Which would you prefer? Sentence12: Great. Your table is reserved for 15 minutes and your reference number is WA0R6QZN . Sentence13: TR6971 Departs at 07:35 and arrives by 07:52. The duration of the ride is 17 minutes. Would you like me to book it for you? Sentence14: I would recommend curry garden. I just need to verify the time needed is 12:45 on Tuesday? Sentence15: We will need to depart from Ely and will need to arrive in Cambridge by 08:15. How long will it take to arrive and what will be the departure time? Sentence16: I need to book a table for 6 on Tuesday at 12:45. Can any of them do that? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System