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: Please make a suggestion and provide the postcode, address, and phone number. Sentence2: dojo noodle bar is a nice restaurant in the centre of town, it serves asian oriental food. Sentence3: What criteria are you searching for concerning dining? Sentence4: Yes, the TR6633 leaves at 21:11 and arrives by 21:58. Would you like me to make a reservation for you? Sentence5: The hotel du vin and bistro is my favorite. Address is 15 - 19 Trumpington Street cb21qa, phone 01223227330 Sentence6: I looking for a restaurant in centre. Sentence7: Your train is booked, the total fee is 31.36 GBP payable at the station and the reference number is : 63QMG2XO . May i help you with something else? Sentence8: great, i have 4 options for you to choose from! Sentence9: yes please. book it for four people and send me the reference number. Sentence10: Is that restaurant moderately priced? Sentence11: I'm also looking for a train that leaves after 20:15 on Saturday. I need to go to Kings Lynn from Cambridge please. Do you have anything? Sentence12: I'm looking for a moderately priced European restaurant located near the centre? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User