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'll be there for 5 nights. Sentence2: I guess the Cityroomz in the centre would be fine then. Does it include free wifi? Sentence3: Yes, it includes wifi Sentence4: I have the Da Vinci Pizzeria. It's a cheap restaurant in the north. Would you like me to help you reserve a table? Sentence5: No, I actually need it in the north part of town. Sentence6: How many days will you be staying? Sentence7: There is one hotel with your criteria. cityroomz in the centre. It is moderately priced. Would you like me to book it for you? Sentence8: I have no hotels that match what you want in the north area Sentence9: I need a zero star hotel in Cambridge with wifi. Sentence10: Can we book it for 8 people starting saturday? Sentence11: I'm also looking for an inexpensive Italian restaurant in the same area. Sentence12: Is there a reference number for the Pizzeria reservation? Sentence13: Yes please. For the same amount of people on the same day at 14:30. Sentence14: Booking was sucessful! Your reference number is U87HN6I5 . Sentence15: Well, you're welcome! And you have a great day! Sentence16: No, that's all I needed. Thanks and bye! Sentence17: yes your reference number is 98842, is there anything else I can help you with today? Sentence18: You're all set for saturday at da vinci pizzeria at 14:30 for 8 people. Is there anything else I can help you with? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System