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: I would like to travel on monday, and arrive by 12:45 Sentence2: Thanks, i'm also looking for a restaurant in the centre that serves french food. Sentence3: sure, what day are you traveling? Sentence4: Booking was successful, the total fee is 188.8 GBP payable at the station . Reference number is : 096H57VB . Sentence5: welcome and thanks for inquiring with us Sentence6: No thank you but I do need the phone number, price range and postcode. Sentence7: There is a train that arrives at 12:08. Would you like to travel on that train? Sentence8: TR5720 leaves london kings cross for cambridge at 11:17 cost is 23.60 pounds. Can I book a seat for you? Sentence9: Thanks so much. That's all I need today. Good-bye. Sentence10: Could I get the time you would like to leave or arrive? Sentence11: Yes for 8 people please. I will also need a reference number. Sentence12: Yes, that would be fine. Sentence13: It is in the expensive price range, phone number is 01223311053, and postcode is cb21uf Sentence14: I'll be traveling on monday Sentence15: Find me a train from london kings cross to cambridge please Sentence16: Cote is a french restaurant in the centre. Would you like to make reservations? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User