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: Thank you for all your help today. I appreciate it. Sentence2: i want to leave after 14:45 Sentence3: Glad to have been of help. Thank you for using the Cambridge TownInfo centre. Have a great day Sentence4: It is located at 35 Saint Andrews Street City Centre. It is a moderately priced international restaurant. Sentence5: Booking confirmed. Reference number is : HAJW2I1I . The table will be reserved for 15 minutes. Sentence6: I'm trying to find a train that leaves on Sunday and going to Cambridge. Can you help? Sentence7: I will be departing from Ely. Sentence8: Great! Thank you! I'm also looking for a particular restaurant. Its name is called the varsity restaurant. Sentence9: It is 18.88 pounds and last a total of 51 minutes. Sentence10: How about TR9823 departing ely at 15:35 and arriving in cambridge at 15:52? Would you like me to book a seat for you? Sentence11: The earliest train leaves at 5:35 and the latest at 23:35. They run every 2 hours. What time would you like to depart or arrive? Sentence12: I'm headed to cambridge. Sentence13: Thanks for the info! Can you please book me a table for 7 people at 18:45 on Sunday? Sentence14: TR7931 departing London Kings Cross at 15:17 and arriving in Cambridge at 116:08. Would you like me to book a seat for you? Sentence15: What is your destination? Sentence16: I'm sorry, I needed to ask you from where would you be departing? Sentence17: Could I get the price and the travel time for that train? Sentence18: Wait. Leaving for London king not Ely. I am going to Cambridge. I need a train for that. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User