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: What type of hotels are they? Sentence2: All right. Is there anything else I can do for you? Sentence3: I was unable to find any hotels matching those requirements. Sentence4: Okay, we've got the the cambridge belfry. Shall I book you a room? Sentence5: Sorry, but we've already established that there are no 5-star hotels available. I can provide you with some 4-star options. Sentence6: Can you navigate me to a 5 star hotel with free wifi please? Sentence7: Great! Have a wonderful day! Goodbye! Sentence8: Sorry, how silly of me. I want to stay at a hotel, not a guesthouse. A cheap 4 star with free wifi, please. Sentence9: I've found 21 hotels that meet those criteria. The Allenbell is one. Should I book it? Sentence10: Do you have a place with free wifi in the cheap range with a star of 4? Sentence11: No, thank you for your patience. I am all set now. Bye. Sentence12: I don't need it booked just yet. I just needed the info, thanks. Sentence13: The Allenbell is a guesthouse. Do you have any other specifications I can narrow your search by? Sentence14: looking for something with 5 stars and free wifi Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System