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: Great, thanks! That'll be all that I need for today! Sentence2: We have entertainment venues, museums, & colleges to visit. Is there a particular attraction type you would be interested in? Sentence3: Clare College is a popular attraction on the west side. The entrance fee is 2.50 pounds and the postcode is cb21tl. Can I help you with anything else? Sentence4: The 16:09 will have you there at 17:54 if it is on time. Would you like me to book you a seat? Sentence5: Hey, I am looking for a train that leaves leicester to cambridge, where is it? Sentence6: 105 minutes is the travel time. May I help you with anything else today? Sentence7: Yes you can. I'd like to see a few things while I'm in town so find me something nice to check out on the west side. Sentence8: There are many trains each day that run between Leicester and Cambridge. What time would you like to travel? Sentence9: I would like to leave on Thursday and arrive by 18:15. Sentence10: I don't need to book now. What is the total travel time for that train? Sentence11: You are welcome, enjoy your stay in Cambridge. Sentence12: Any attraction you recommend will be great. I just need the postcode and entrance fee. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System