Hello how may I help you? I want to manage my contact. What do you want to change? could you add new contact Daniel with phone number 5436595743 Sure. Would you like to add additional information to Daniel's contact? it is fine. could you show me the peter from Los Angeles phone number? sure, it's 546 168 7378. could you change the phone number to 546 329 5432 Would you like to keep the old number underneath a different label? no erase the old number please. Ok, I got it done for you. thank you very much for your help. You're welcome!