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: TR0031 leaves cambridge at 14:36 and arrives in Norwich at 15:55. Total travel time is 79 minutes. The cost is 17.60 pounds. Will that meet your needs? Sentence2: Ok. Golden Wok is located at 191 Histon Road. Would you like me to book a table for you? Sentence3: Okay, your booking was successful. The table will be reserved for 15 minutes, and your reference number is X31YFN1Y Sentence4: yes, thats all tge info i need thanks Sentence5: I will be departing from cambridge to norwich on Wednesday and the train should arrive norwich by 16:45 Sentence6: I'll be happy to assist you with that. Where would you like to depart from and go to? Sentence7: book a table for 8 people at 15:45 on tuesday. Sentence8: Yes. It's called the Golden Wok. Sentence9: Okay, glad you enjoyed! Have a good day. Sentence10: I am traveling to Cambridge and looking forward to try local restaurants. Sentence11: Would you like to book tickets? Or is there anything else I can help you with today? Sentence12: yep your awesome thanks Sentence13: Thank you. I also need to find a train. Sentence14: Are you looking for something in particular? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User