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 want tickets for 3 people and give me reference number. Sentence2: I don't care where- just a museum. Sentence3: I am leaving from peterborough going to cambridge Sentence4: Can you help me find a train leaving on sunday after 12:00. Sentence5: Yes can I get the info please? Sentence6: It is located at 5 Greens Road in the centre area of town. The phone number is 01223902168. The admission is free. Sentence7: Train number TR9345 leaves Peterborough at 12:19 and arrives in Cambridge around 13:09. Would you like a ticket for this train? Sentence8: Thank you and what is the postcode? Sentence9: cambridge artworks would suit your needs. Can I get you more info on it? Sentence10: Cambridge Artworks is in postcode cb13ef. Do you need anything else? Sentence11: I'd be happy to help you find something. Can you tell me where you will be departing from? Sentence12: No thats all I needed. Thank you! Sentence13: im also looking for a place to go in town Sentence14: We have many fantastic attractions! Would you like to narrow it down by area or type? Sentence15: You're welcome. Have a great day! Sentence16: Your reference number is : OYYUXXUM . Can I help with anything else? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System