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: It's cb21sj. Anything else you need assistance with? Sentence2: Cambridge has 23 museums. What area of town would you like to go to one in? Sentence3: Great. Thanks. I'm also looking for a museum to check out. Can you help me with that? Sentence4: there are many. Where would you like to travel to? Sentence5: Booking was successful, the total fee is 80.8 GBP payable at the station . Reference number is : 3AWBI59X . Sentence6: Greetings, are there are any trains leaving bishops stortford. Sentence7: Certainly, the Byard Art is a museum in the south part of town. Their address is 14 king's parade. Would that work for you? Sentence8: Train 0277 leaves at 17:29 and arrives at 18:07. Would you like me to book you a ticket? Sentence9: That is all for today, you were very helpful. Sentence10: I need to leave after 16:30. Sentence11: Can you tell em the postcode as well please? Sentence12: Yes make a booking for 8 people and give reference number. Can you suggest places to go like museums in Cambridge? Sentence13: Can you find one in the south please? Sentence14: I would like to leave on thursday to cambridge. Sentence15: I have 10 trains leaving Bishops Stortford for Cambridge on Thursday. What time would you like to depart? Sentence16: Thank you so much! You have a wonderful day! Bye! Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System