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: A museum would be fine. I'll just need to know the entrance fee. Sentence2: i also want to book a taxi to commute between the two places Sentence3: Thanks for all of your help! Sentence4: i'm looking for university arms hotel Sentence5: I'm glad I was able to help you. Thanks for using our service today. Hope you have a good day. Sentence6: University Arms Hotel is an expensive 4-star hotel in the Centre of town on Regent Street. The hotel has internet and parking. Would you like me to book you a room? Sentence7: Do you have any preferences in the type of activity? Museums? Entertainment? Colleges? Sentence8: lynne strover gallery which is my favourite has free entrance. Sentence9: Yes, I am also looking for places to go on the west side of town. Can you suggest some places? Sentence10: Yes, I need 3 nights for 1 person starting from Saturday and the reference number. Sentence11: Ok. I was able to book a yellow bmw for you. The contact number is 07465102447. Sentence12: I've got it booked! Here's your reference number: 8QBUV7UM . Can I help you with anything else? Sentence13: Sure, which direction will you need to travel and when? Sentence14: From the hotel to the museum, leaving by 22:00. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System