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 also need to find a place to visit in the west part of town. Sentence2: No, find me one that leaves after 08:00 please. Sentence3: Their postcode is cb30ag Sentence4: Can you book for 8 people? Please include the reference number. Sentence5: Thank you, that will do it for me today. Sentence6: I'm going to Liverpool Street in London. Sentence7: Your reference number is 8P0JZI40 and you'll owe 132.8 GBP. Anything else I can do? Sentence8: The phone number is 01223332138. Sentence9: Enjoy your time at the college! Sentence10: I have train TR5504 that leaves at 11:59 and arrives by 13:27. Would this fit your schedule? Sentence11: Can you give me the phone number, please? Sentence12: I have 10 trains going to Liverpool Street from Cambridge on Thursday. What time do you need to arrive? Sentence13: There's nothing in particular. Could you recommend something fun to do? Sentence14: I want to arrive by 15:00. Sentence15: TR2715 leaves at 09:59 and arrives by 11:27, does this suit your needs better? Sentence16: Of course. Where are you headed? Sentence17: Is there anything in particular you'd like to see in the west part of town? Sentence18: The magdalene college sounds like a blast and its also free. Sentence19: Can you find me a train on thursday? I am leaving from cambridge. Sentence20: Great! What is their postcode please? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User