customer: Hello. 
 agent: Hello. How can I aid you? 
 customer: I am planning to change an exiting reservation, due to health issue.Can you please change my reservation? 
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 customer: My name is Patricia Brown. 
 agent: Please wait a while. 
 customer: Sure. 
 agent: Thanks for being waiting, We didn't found any reservation by this name. 
 customer: That's fine, thank you for your help. 
 agent: Thank you for opting us.
agent: Sure. May I know your name?