customer: Hello. 
 agent: Hello, how may I assist you today? 
 customer: I am Raymond White, I want to change my reservation as my plan to meet my friend is postponed due to my bad health. Can you help me to change my reservation. 
 agent: Sure, I am here to help you. Ok, please wait a moment. 
 customer: Sure. 
 agent: Thanks for waiting. Sorry, there is no reservation found on your name. 
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 agent: Thank you for opting us.
customer: Ok, thank you for the information.