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: Do you need internet or parking? Sentence2: Yes, there are 7 hotels available. I'd recommend the acorn guest house. Would you like a room? Sentence3: Booking was successful. Reference number is : UN9VHM37 . Anything else I can help you with today? Sentence4: TR3947 leaves cambridge at 09:11 and arrives at 09:58. Would that work for you? Sentence5: I am looking for information in Cambridge. Sentence6: I'm departing from Cambridge on Friday. Sentence7: What area would you like to stay? And do you have a pricerange? Sentence8: No, you have been very helpful. I have all of the information I need for now. Thanks so much, bye. Sentence9: What is price for a ticket and I also need the travel time. Sentence10: Sure thing, where will you be departing from? Sentence11: I do need parking. Is there anything available? Sentence12: i would like to stay in the north and looking for something with 4 stars Sentence13: The cost is 9.80 pounds and the total travel time is 47 minutes. Is there anything else I can help you with today? Sentence14: I am also am looking for a train that goes to kings lynn. I need to arrive by 12:30. Can you help me book a train? Sentence15: book for 4 people and 4 nights from wednsday Sentence16: It was a pleasure assisting you. Good-bye. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System