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: Total travel time is 50 minutes. Would you like me to book it? Sentence2: Not right now, thanks. As I'll be in the center part of town I'd like to find an expensive restaurant there. Do you have any suggestions? Sentence3: TR8714 departs at 17:48 and arrives by 18:38 in Cambridge on Thursday. Would you like to book a seat? Sentence4: I have the Cambridge Chop House postcode cb21sj address is 1 Kings Parade and the phone number is 01223359506. Would you like me to book that for you? Sentence5: Where wouold you be traveling from? Sentence6: Hi, I'm looking for a train that departs on Thursday for Cambridge. Sentence7: I certainly can what type of cuisine are you interested in? Sentence8: Okay, have a wonderful day, bye! Sentence9: What is the total travel time? Sentence10: No, I actually do not need any further assistance today. Thank you, goodbye! Sentence11: Cuisine doesn't matter as long as it's expensive and in the centre. Why don't you choose one and give me the phone number, postcode, and address Sentence12: I will be departing from Peterborough and I need to leave after 17:15. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User