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: Yes that booking was successful and the reference number is F7EI7E4Y . Sentence2: Where would you like to go? Sentence3: What day would you be traveling. I'd be happy to look that up and book it for you. Sentence4: I would like that to be for Wednesday and I will need tickets for 3 people please. Sentence5: Yes please, for 3 people. I also need to know if the restaurant La Minosa is still open. Sentence6: I'm looking for a train out of cambridge. Sentence7: Thanks so much. Have a great day! Goodbye Sentence8: Can you book the La Mimosa for the same group of 3 people at 11:30 on Wednesday? Sentence9: Okay, the TR6167 leaves at 13:01 and arrives by 14:01. Would you like me to book this one? Sentence10: Booking was successful, the total fee is 53.7 GBP. Reference number is : GKN1SECP . Unfortunately, I don't have the hours of operation for La Mimosa. But their phone number is 01223362525. Sentence11: I am going to broxbourne on and need to arrive by 14:45. Sentence12: If there is anything else, please contact us. Good bye. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System