Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Addenbrookes Hospital is located at Hills Rd, Cambridge and has a teenage cancer trust unit. Do you need their phone? Sentence2: I got injured and are looking for a hospital nearby it should have the teenage cancer trust unit department Sentence3: I think that will do it. Thanks for the information. Sentence4: Addenbrookes Hospital is on Hills Rd, Cambridge and Postcode CB20QQ. The phone for that unit is 01223274222. Anything else? Sentence5: Yes, please. Also their address and postcode. Sentence6: You are welcome, best of luck with everything. Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User