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: There will be 7 people staying for 2 nights beginning on Thursday. Sentence2: Unfortunately, there are no guesthouses that meet that criteria. In the area, there are 24 guesthouses, some of them cheap, some expensive. Can you narrow down your choices? Sentence3: All booked and ready to go! The reference number is RJVNE0PT . Sentence4: Yes, 1 night will work. I've booked the hotel for you, and your reference number is FIINUE5N . What else can I help you with? Sentence5: My attempt to book your party was unsuccessful. Would you like to try a different length of stay, or a different hotel? Sentence6: Sure, I can book that for you. How many people will be staying and for how long also arriving what day? Sentence7: Yes please, book it for 7 people. Sentence8: What is your departure site and time? Sentence9: That will be all. Thank you. Sentence10: Hi! I'm looking for a train to Norwich on Saturday. Sentence11: Wonderful. Enjoy your stay in Cambridge! Sentence12: From Cambridge and I want to arrive by 20:30. Sentence13: I have a train that would leave at 18:36 and arrive by 19:55. It's 79 minutes long and costs 14.08 pounds. Would you like me to book it? Sentence14: Would 1 night work instead? If it does could I get the reference number please? Sentence15: If there are no 1 star guesthouses, please find me the cheapest one that includes free wifi. Sentence16: Alexander bed and breakfast is a 4 star cheap guesthouse with free interenet and parking located in the centre. Does that work for you? Sentence17: Yes Alexander bed and breakfast that has a star of 4 would be great. Sentence18: I am also looking for a place to stay. Can you find a 1 star hotel for me that is a guesthouse? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System