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 will also need a taxi to get to the boat from the restaurant. Sentence2: Not at this time. Can I have the address, phone number, and postcode? Sentence3: I need to arrive by 14:15 Sentence4: Yeah I'd like to go somewhere in town, like a boat or something. Sentence5: When would you like to arrive by? Sentence6: I can recommend the hotpot. Would you like help making a reservation? Sentence7: If you are interested in boating, I have 4 different venues available. I have some in the north, east and centre of town. Which do you prefer? Sentence8: I was able to book you a black volkswagen, phone number is 07123207292 Sentence9: Thank you for using our system! Sentence10: The Riverboat Georgina may interest you then it is located at Cambridge Passenger Cruisers, Jubilee House in the North with a phone number of 01223902091. Can I help you more? Sentence11: I am looking for a place to dine! I would prefer chinese food located in the north. Sentence12: Thank you, that's all I need today. Sentence13: There are 3 Chinese restaurants in the north. One is in the moderate price range and two are in the expensive price range. Do you have a preference? Sentence14: I would like one in the expensive range please Sentence15: The address is 66 Chesterton Road Chesterton, the post code is cb41ep and the phone number is 01223366552. Is there anything else I can help you with? Sentence16: How about one in the north? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System