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: Not yet. What time does TR8705 leave Kings Lynn? And what do the tickets cost? Sentence2: It leave kings lynn at 08:11 and the tickets are 9.80 pounds per ticket. Would you like me to book you tickets? Sentence3: I hope you have a pleasant trip! Sentence4: Sure! Golden Wok is located at 191 Histon Road Chesterton. Their postcode is cb43hl. You can reach them at 01223350688. Anything else I can help with? Sentence5: Im looking for food its name is called golden wok, can you get me address, postcode, and phone number Sentence6: great, the TR8705 can get you there by 8:58. would you like tickets? Sentence7: to cambridge and should arrive by 09:00 Sentence8: Ok is there anything else I can help you with ? Sentence9: OK, and where will you be traveling to? Sentence10: Excellent! Do you need assistance with transportation? Sentence11: No, that's all at this time. Thank you. Sentence12: No I don't need you to book it. Sentence13: I also looking for a train. The train should depart from kings lynn and should leave on thursday Sentence14: I am planning a trip to Cambridge Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System