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: What day and time will you be departing? Sentence2: Yes, may I have the address, too? Sentence3: Please help me find a train from kings lynn to cambridge. Sentence4: Your reference number is RH4X9U1Z . Do you need anything else? Sentence5: TR1612 will get you there by 9:58. Plenty of time. Sentence6: Friday. I need to arrive by 11:30. Sentence7: Yes, please. I would like to visit a museum while I am in town. Sentence8: Could I get the phone number and postcode of that museum? Sentence9: Be sure to ask if you need anything! Sentence10: Is it in the west? I need something in that area. Sentence11: Awesome. Thank you for using the Cambridge TownInfo centre. Have a great day! Sentence12: that is it i am good now thanks ! Sentence13: If you'd like to be in the west, I recommend Cafe Jello Gallery. Sentence14: Ok, that sounds good. Can I please book 2 tickets? And I'll need a reference number, please. Sentence15: The address for Cafe Jello Gallery is 13 Magdalene Street. Would you like any more assistance today? Sentence16: Sure, the phone number is 01223312112. The post code is cb30af. Do you need any additional information about Cafe Jello Gallery? Sentence17: How about the cambridge artworks? Sentence18: You too, goodbye! Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User