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 have a restaurant in mind that I'm trying to eat at tonight. Sentence2: Great, can you give me the name? Sentence3: Expensive price range, please. Sentence4: I would also like to find a place to stay with free wifi and parking. Sentence5: Thanks for using our service today! Sentence6: I can make that reservation for you. Sentence7: Yes it's called Rice House. I would like to make a reservation there for 7 people at 16:30 on Saturday. Sentence8: Ok. Can I have the reference number for that reservation? Sentence9: Can you tell me how much you'd like to pay? I have hotels in the centre of town that are expensive and cheap. Sentence10: Great. Your booking was successful and your reference number is ZIF2SFKO . Sentence11: I have two matching that criteria. Do you want me to choose? Sentence12: Okay, your room reservation is for Gonville Hotel located at Gonville Place. Your reference number is ROQAGG58 . Anything else you need help with today? Sentence13: No, that will be all. Thank you. Sentence14: Yes, please. Book that one, saturday, 4 nights, 7 people. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User