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: where do you want to go? Sentence2: Where is it located? what is it's star rating? Sentence3: Sure thing! I like acorn guest house. Can I book a room for you? Sentence4: yes thank you. Sentence5: Alright, got you booked. You're reference number is: 86WN2LDQ . Can I help you with anything else? Sentence6: Yes, I need a reservation for 7 people for 2 nights starting from Friday and the reference number. Sentence7: You are booked on train number TR5291 leaving Cambridge for Norwich at 7:36, arriving in Norwich at 8:55. The fee is 14.08 pounds and the reference number is YV651F9C . Sentence8: it is located in the north, 154 chesterton road and is 4 star rated Sentence9: There is a train leaving at 17:36 that arrives at 18:55. Would you like me to book that for you? Sentence10: enjoy your stay in cambridge Sentence11: thank you so much! Sentence12: Yes, I also need to book a train for Sunday. Sentence13: I need to get to norwich by 19:00. Sentence14: I'm looking for a guesthouse that includes free parking. Sentence15: I need a train leaving Cambridge and going to Norwich, sunday. It should arrive by 19:00. Sentence16: We have 19 trains available. Would you like to narrow it down by departure site, departure time, or arrival time? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User