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 only have one place with a 0 star rating. The El Shaddai. Would you like me to book it? Sentence2: In the Centre please. Sentence3: I would like the reservation for 5 nights. Sentence4: How many people? Sentence5: Can I help you with anything else ? Sentence6: ok thankyou, will figure out what to do Sentence7: I would be happy to make that booking. Are you traveling alone, and for how many days would you like the reservation? Sentence8: One person starting Wednesday. Need the reference number and also looking for a Cuban restaurant in the expensive price range. Sentence9: Your booking was successful. The reference number for your stay is 26KK8TWA . What area will the Cuban restaurant be in? Sentence10: I want one that's 0 stars. Sentence11: I'm sorry, there are no restaurants that match your requirements. Do you have other suggestions? Sentence12: Can you recommend a guesthouse to stay in in the centre of town? Sentence13: There is the alexander bed and breakfast and el shaddai. Would you like to book one of them? Sentence14: That sounds good. Please go ahead. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System