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: No that is it. Thank you so much. Sentence2: Okay and which day and time would be best for you? Sentence3: I have No matching records found. would you like something different ? Sentence4: I would also like to go to a museum nearby in the south part of town. Please also give me its address and entrance fee. Sentence5: Wednesday at 13:00, if that's available. Sentence6: Yes, a table for six, please. Sentence7: I have found the yippe noodle bar. It is located in the centre. Would you like a reservation? Sentence8: How about 12:00? Sentence9: I was not able to book, can I try another place or time? Sentence10: I will. Goodbye. Sentence11: Hi, I'm looking for a moderately priced restaurant that serves christmas food. Do you know of any? Sentence12: Do you know of any restaurants that offer Italian food that is moderately priced? Sentence13: Goodbye. If you need anything else, don't hesitate to contact us again. Sentence14: You're very welcome. Have a great trip! Sentence15: I have Byard Art Museum in the south. They offer free admission. They are located at 14 King's Parade. Is there anything else I can do for you? Sentence16: Your table is reserved for 12:00. Your reference number is XOY3DO4V . Sentence17: I changed my mind. Could you find a restaurant that serves asian oriental food? Sentence18: byard art museum is located at 14 king's parade and the phone number is 01223464646. Let us know if we can help further. Sentence19: Thank you again. Sentence20: There are 5 Italian restaurants in the moderate price range. What area do you prefer? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System