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: There are so many to choose from. Any idea what kind of attraction you would like to visit? Sentence2: It will just be a table for one. Go ahead and book it Sentence3: Yes, I would like to go to a college with free admission. Sentence4: How many will be at your table? Sentence5: sure thing it is cb23bu, anything else today? Sentence6: Yes, I'd like to find a cheap Chinese restaurant. Sentence7: The reference # is 4ZBQs5GE . Need anything else? Sentence8: There are 10 colleges in the centre with free admission. Would you like me to suggest one? Sentence9: I'm looking for an attraction in the centre. Sentence10: What is that college's postcode? I'm also hungry and want somewhere to eat. Sentence11: Great, that's all I need...thanks so much! Have a great day! Sentence12: There are four options, charlie chan is in the centre near the college that you are visiting, shall I book you? Sentence13: Yes please book it for monday at 11:15 Sentence14: Can you give me the postcode for Christ's College? Sentence15: You are welcome. Glad to be of assistance. Enjoy your stay in Cambridge. Bye. Sentence16: Christ's college have a free entrance Sentence17: I also need a taxi that will arrive by the booking time. Sentence18: Booked car type : white ford Contact number : 07018249902 Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System