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 area is that in? Sentence2: 08715501010 Can I help you with anything else? Sentence3: You can reach them on 01223400170 Sentence4: Not right now, but could you give me their phone number and postcode? Sentence5: What is their phone number? Sentence6: it is in the south area. Sentence7: Can you also help me book a taxi Sentence8: I'd love to. The address is 2G Cambridge Leisure Park Cherry Hinton Road Cherry Hinton, and the postcode is cb17dy. Sentence9: that's all i need thanks Sentence10: I am excited to be coming and would love to find an expensive mexican restaurant. Sentence11: What about something for entertainment? Sentence12: How many passengers will there be? Sentence13: Then you want chiquito restaurant bar on the southend! Would you like me to book you a table? Sentence14: Are there any architectural attractions near there? Sentence15: Could I get a phone number for the restaurant please? Sentence16: There are no architecture attractions in the south. Sentence17: Certainly, were would you like the taxi from? Sentence18: It will just be me, so one. Sentence19: I want to leave the Tenpin by 17:15 to go to the Chiquito restaurant. Sentence20: You are booked for a grey Toyota. The taxi contact number is 07123501809. Do you need help with anything else? Sentence21: Sure, most people love Tenpin, located at Cambridge Leisure Park, Clifton Way, postcode cb17d. Sentence22: Glad I could help, have a good day. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System