customer: Hello, myself Ronald King. 
 agent: Hello, how may I oblige you today? 
 customer: I would like to change my flight reservation as my trip got postponed, can you please do that for me? 
 agent: Sure, we are here to help you. 
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 agent: Please wait for a while. 
 customer: Sure. 
 agent: Sorry we couldn't find any reservation with your name. 
 customer: That's fine. Anyway, thank you for the information. 
 agent: Thank you for availing us.
customer: Thank you.