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: That is all I need today, thank you. Sentence2: Of course, there are many trains on that route. What day would you like to travel, and is there a time you would like to arrive by? Sentence3: No need to book it for me. I can do that. But can you tell me the travel time in minutes? Sentence4: 36 MINUTES Sentence5: I would like to travel on Saturday, arriving at 8:00. Sentence6: Sure the phone number is 01223335511. It is on silver street and the entrance fee is 2.50 pounds. Sentence7: I only have one train that will meet your needs. Train TR6163 will depart at 05:29 and arrive by 06:07. Would you like me to book you a ticket? Sentence8: The postcode is cb39et and it is a college. Is there anything else I could help you with? Sentence9: I am also looking for a attraction called queens' college, can you get me information on that? Sentence10: I am planning a trip to Cambridge on a train. I want to leave form bishops stortford...can you help me with that? Sentence11: Great. And what is the postcode? And attraction type? Sentence12: You're welcome. I hope you have a great day! Goodbye. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System