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: Oh yes. Absolutely. Your reservation reference number is 7ZPRZE74 . Can I be of help with anything else? Sentence2: I am looking for places to go in Cambridge. Are there any nightclubs? Sentence3: Can you provide me with the reference number for my reservation please? Thanks. Sentence4: Can you try to book the restaurant for 18:30 instead please? And can you provide a reference number as well. Sentence5: I would like to book a table for 5 people at 19:30 on tuesday please. Sentence6: I have booked a table for you for a party of 5 at 18:30 on Tuesday at the Ugly Duckling restaurant. Is there anything else I can help with? Sentence7: The ugly duckling is located in the centre of town. It serves chinese food. Would you like to book a reservation? Sentence8: You're welcome. Have a nice day. Sentence9: There are 6 nightclubs in Cambridge. Is there a specific part of town you prefer? Sentence10: No, that is all. Thank you! Sentence11: I do not have a preference. Can you give me the phone number and postcode for one? Sentence12: Club Salsa phone number is 07782218745 and the postcode is cb12jb, is there anything else I can assist you with? Sentence13: tuesday at 19:30 is not available, would you like another time or another day? Sentence14: Yes I am looking for a restaurant called the Ugly Duckling. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System