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: That's it, thank you. Sentence2: Have a good day Sentence3: I have 7 trains leaving Cambridge on every :11 starting at 17:11. Is there a specific time you would like to arrive by? Sentence4: I would also like information for ADC Theater. What is the address and phone number? Sentence5: Thank you. What area is adc theatre in? I would also like to book TR8626 and would like to know the travel time. Sentence6: i have 133 trains matching your preferences. What day would you like to travel? Sentence7: That's unimportant I'm just looking for the area Sentence8: How many people would you like to book the train for? Sentence9: ADC theatre is in the center of town. The travel time for your train to kings lynn is 47 minutes. Can I help with anything else today? Sentence10: No. Anytime after 16:45 is fine please. Sentence11: I am looking for a train which departs from Cambridge and arrives in Kings Lynn. Can you help me with that? Sentence12: TR8627 leaves Cambridge at 17:11 and arrives in Kings Lynn by 17:58. Would you like to book it? Sentence13: The address in park street. The phone number is 01223300085. Sentence14: I would like to leave on Wednesday anytime after 16:45. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System