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: Would you like a free entrance fee or paid? Sentence2: you're very welcome. enjoy your visit. Sentence3: Thank you for your help! Sentence4: I would like to know the location and types of museums that are in Cambridge, can you give me more information? Sentence5: Yes, that would work. Can I get a price and a departure time please? Sentence6: i also need a train on monday leaving from cambridge and arriving by 17:00. Sentence7: It departs at 15:11, price is 9.80 per pound, the train ID is TR9468. Sentence8: I do not have a preference on area. Sentence9: Would the train that arrives at 15:58 work better for you? Sentence10: Cambridge artworks is found in the East. Their postcode is cb13ef. Sentence11: There are 23 museums in Cambridge. Is there a particular part of town you're looking for? Sentence12: No. I need to go catch a plane. Sentence13: It doesn't matter just pick a great one for me, and I'll need the postcode for the museum that you recommend for me. Sentence14: There is a train leaving cambridge and going to kings lynn at 16:58 Monday will that train work for you? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User