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: I need to come to Cambridge on Sunday and I'd like to take a train. Do you have anything leaving out of Birmingham New Street on that day? Sentence2: I want to book it for 5 people for 2 nights starting on the same day as my train trip. Sentence3: There is one train that arrives by 08:23. Do you want me to book it? Sentence4: Thank you for contacting us and have a nice day. Sentence5: The train id for that is TR8730 and the price is 60.08 pounds per ticket. Can I help you more today? Sentence6: Thank you. That was all I needed today. Sentence7: I would like to arrive in Cambridge by 9:15 please. Sentence8: Have a great trip. Sentence9: The trip is close to 3 hours. Do you have a preferred departure time? Sentence10: What would you like to know about it? Sentence11: I am also looking for information on a hotel called autumn house. Sentence12: Thanks a lot for all your help! Sentence13: Can I get the train ID and also the price for this trip? Sentence14: booking successful. Ref number is X0JLKVVF . Anything else today? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System