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 am wanting to go to Cambridge. Sentence2: No preference. Can you recommend one & book a table for 4 people at 17:45 on saturday. & may I have the reference # please? Sentence3: I am looking for an expensive restaurant in the centre city. Sentence4: What will your destination be? Sentence5: I'm looking for a train leaving on Saturday from Kings Lynn. Sentence6: I need to leave after 13:00. Sentence7: Do you have any time preferences? Sentence8: That would be fine. Is it available Saturday at 17:45? Sentence9: The restaurant Fitzbillies is available, and I've made you a reservation. Your reference number is 4WGDGOSA . Sentence10: I have several restaurants in the centre in the expensive range. What type of cuisine would your prefer? Sentence11: I would recommend british cuisine. Would that be okay with you? Sentence12: The TR1499 leaves at 17:11. Can I book some tickets for you? Sentence13: It was my pleasure to serve you. Please contact us again if you need any more assistance. Have a good day. Sentence14: You're reference number is BIAZMBUC . Is there anything else I can help you with? Sentence15: Yes book for 4 people Sentence16: Thank you for your help, have a nice day. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User