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: The price for the TR2514 is 7.84 pounds per ticket. Would you like to book a seat? Sentence2: I have train TR2514 that departs at 10:11 and arrives by 10:58. Would that be something that would work for you? Sentence3: What day would you be traveling and where are you going to? Sentence4: No, that is all I needed, thank you for your help! Goodbye. Sentence5: I'll be going to Cambridge on the same day as my stop at Travellers Rest. Sentence6: There are 9 expensive restaurants in the west. There are British, European, Indian, and Thai food to choose from. Which would you prefer? Sentence7: Please book for 1 person at 16:30 Sentence8: Yes, that would be great. What is the price for that? Sentence9: I'm looking for an expensive restaurant in the west. Sentence10: You're welcome. It has been a pleasure helping you today. Have a great trip! Sentence11: At what time on Saturday would you like a table reserved? Sentence12: I also need a train departing from Kings Lynn arriving by 11:15. Sentence13: I would love something that has British food. Sentence14: It has been booked, your reference number is Q1IQNSL8 Sentence15: I think I'll try Travellers Rest. Could you book me a table there for Saturday? Sentence16: You should try either Graffiti or Travellers Rest then. Would you like more information about these? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System