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: I recommend the Golden Wok located at 181 Histon Road Chesterton, post code cb43hl, and their phone number is 01223350688. Sentence2: I can assist, where will you be coming from and do you have a time preference? Sentence3: I need a train on wednesday to try some of the local restaurants in cambridge. Sentence4: Great! Can you also find me a moderately-priced restaurant on the north side of town? Sentence5: I have listings for 2 both in the north of town. Sentence6: How much are the tickets? Sentence7: Can you give me a phone number and post code for whichever one you like the best? Sentence8: I am departing from London Kings Cross and need to arrive by 16:30. Sentence9: The earliest that I can get would be an arrival time at 14:08. How many tickets please? Sentence10: Thank you , that will do it . I appreciate the help. Sentence11: The reference number is F2ODHQYM . Sentence12: Each ticket is 23.60 pounds. Sentence13: You're so welcome. Have a nice day! Goodbye! Sentence14: Please book it for 1 person please. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User