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 should be fine. Please provide me tickets for the same group of people. I will also need a reference number. Sentence2: Going to Stansted Airport, from Cambridge. Sentence3: Yes, I would like to go to the airport on Monday. Sentence4: Booking was successful, the total fee is 60.59 GBP payable at the station . Reference number is : 2L1LA91L Sentence5: That is everything, thank you for your help. Sentence6: I'm sorry, I do not have information about plane travel, could I book you a train instead? Sentence7: Yes great I made your reservation and your reference number is SGSSGX8P . Sentence8: You're welcome! Have a great day! Sentence9: Yes, the efes restaurant. I'd like to book for 6 people at 12:00 on sunday. Could I also get the reference number? Sentence10: Hi I am also looking for a plane, leaving Monday at 6:00. Sentence11: Do you need me to look up anything else for you? Sentence12: I don't have information on deals, but I can book as many tables as you need. Do you have a cuisine in mind? Sentence13: Nope. That's it. Thank you. Sentence14: What is your destination? Sentence15: TR7460 leaves at 6:40 would that work for you? Sentence16: Hi is there any deals for tourists that will be a great price? so i can book them all at the same time? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User