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: Sure, I need a 4 star guesthouse with wifi and parking. The area doesn't matter. Sentence2: No specific area. I would like it to have free wifi and 4 stars. Sentence3: Alright, you're all booked. Your reference number is JAKFVTLQ . Can I help with anything else today? Sentence4: I am not particular as long as it has a 2 star rating, free wifi and is a guesthouse. Sentence5: What part of town do you want to stay in? Sentence6: I have 16 entries that are a match. What area would you like the hotel in? Sentence7: how about the archway, its moderately prices and has free wifi and parking? Sentence8: Can you tell me what type of attraction this is and the entrance fee? Sentence9: I'm looking for info on soul tree nightclub. Sentence10: I'm sorry, can you just clarify whether you prefer 2 or 4 stars? Sentence11: Thank you so much for your help. That was all I needed. Sentence12: Sure. Soul Tree Nightclub is a nightclub attraction. The entrance fee is 4 pounds. Sentence13: i need a guest house which has free parking Sentence14: That sounds good. I'd like to book a room for 2 people starting on Saturday and lasting 5 nights. Sentence15: You're welcome! Have a great day! Sentence16: It's located in the centre. Here's the phone number 01223477900. The address is 1-6 corn exchange street Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System