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: You have two options. Dojo Noodle Bar and J Restaurant both fit your specifications. Which of these would you like me to make a reservation for you at? Sentence2: I have 15 cheap places to dine. Another food preference perhaps? Sentence3: Glad I could help, enjoy your stay in Cambridge. Sentence4: The address and the post code is all I need. Sentence5: I can't book it but I can provide you with the address if you'd like. Sentence6: Yes, is there anywhere that you can play some sports near the restaurant? Sentence7: Not really- what about a cheap restaurant? What are my choices? Sentence8: There is none available, do you have another type of food? Sentence9: Thank you, that's all I need today. Sentence10: Can you book that for me. Sentence11: Hello, I'd like to have dinner in the centre, is there anywhere that serves Afghan food? Sentence12: Yes, that would be a good idea. Can you search for one that serves asian oriental food for me? Thanks a lot Sentence13: Dojo Noodle Bar sounds interesting. Can you get me the phone number and post code for them? Sentence14: The postcode is cb19ej, and the address is colville road, cherry hinton Sentence15: I have the cherry hinton village centre located at colville road, cherry hinton. Sentence16: Sure, the phone number is 01223363471 and the postcode is cb21rq. Is there any other information I can help you with today? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System