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: sure theres two hotels, 01223525725 and 01223351241 Sentence2: Yes, which one is the best? Sentence3: We have 5 hotels available that are located in the centre of town. Sentence4: Thank you. Goodbye! Sentence5: No, not at this time. I just needed the information. Thank you and have a nice day. Sentence6: Their phone number is 07782218745 and the post code is cb12jb. What sort of hotel are you looking for and in what area? Sentence7: Are there any outdoor festivals or activities? I'll need the postcode and phone number. Sentence8: There are 79 activities in the town center. How may I help narrow your search? Sentence9: Ok, please give me Club Salsa's postcode and phone number. I also want to find a hotel in the same area. Sentence10: Are there any nightclubs in the centre? Sentence11: What are their names? Sentence12: Club Salsa looks good. Sentence13: What kind of attraction are you interested in? Sentence14: I'm looking for a hotel in the centre of town. Sentence15: I'm looking for a place to go in the centre of town. Sentence16: There are 5 nightclubs in the centre. Would you like a recommendation? Sentence17: They are Alexander Bed and Breakfast and University Arms Hotel. Do you have a preference? Sentence18: Which hotels are rated 4 stars and offer free parking? Can I have a phone number for those hotels? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System