Teacher: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? If you are still confused, see the following example:
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
Solution: Answer: (A) User
Reason: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Now, solve this instance: Sentence1: 51 Trumpington Street City Centre and cb21rg Sentence2: I need a place to dine in the expensive price range serving north indian food Sentence3: There are 29 hotels with those criteria. What location would you like it to be in? Sentence4: Unfortunately booking was unsuccessful is there another time you'd like to go? Sentence5: I am traveling to Cambridge and looking for a local restaurant. Sentence6: There aren't any restaurants serving expensive north indian food. Sentence7: I would like it to be in northern cambridge and have 2 stars. Sentence8: There are two hotels that meet those criteria, the Ashley Hotel and the Lovell Lodge. Sentence9: You're welcome. Have a good day. Goodbye. Sentence10: Yes, i was able to book the ashley hotel for two days. Your reference number is 6OMRC62I . Can I help with anything else? Sentence11: yes less than 100 a night Sentence12: Hi! I am looking for a place to stay that has free wifi. The hotel doesn't have to have free parking but that would be nice. Sentence13: There are many listings. Do you have an area or price range preference to further narrow down? Sentence14: Actually, I'm all set. Thanks again. Goodbye! Sentence15: Ok great, thank you! Sentence16: There are 6 restaurants listed, do you have a preference of area? Sentence17: Are there any that serve british food? Sentence18: Is there anything else you need help with? Sentence19: Can you try for 2 nights? Sentence20: Try Ashley Hotel for 6 people, 3 nights, starting Monday. Sentence21: I have 6 restaurants that serve expensive British food. Would you prefer one in the east, west or centre area? Sentence22: Centre would be fine. Could you give me the address and postcode, please? Question: Who has spoken the sentence 1? (A) User (B) System
Student:
Answer: (B) System