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: No. that will be all. good bye. Sentence2: To help you find the train you are looking for could you please provide me with your departure site and destination? Also your departure time and arrival time? Thank you. Sentence3: We have lots of architecture, colleges and museums. Do you have a preference? Sentence4: The train ride is 60 minutes long. Sentence5: Nope, any will be fine. I just need an entrance fee and phone number for one. Sentence6: How long does the journey take? Sentence7: Have a great day! Sentence8: Okay, you can try Great Saint Mary's Church. Admission is 2 Pounds. Their phone number is 01223350914. Can I help you with anything else? Sentence9: Can you assist me in getting a train that leaves after 18:30? Thanks Sentence10: I have 6 trains for you to choose from. The earliest leaves at 18:32. Do you want me to book a ticket? Sentence11: Thanks, that's all I need for the train for now. Are there any interesting attractions in the town centre? Sentence12: I'm coming from Broxbourne going to Cambridge on Saturday. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System