customer: Hello,. 
 agent: Hello, may I know your name? 
 customer: I want to change my existing reservation which is with the name Brenda Smith as my Business meeting got postponed. 
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 customer: OK, sure. 
 agent: Thanks for waiting, sorry to inform there is no reservation found on your name. 
 customer: OK, that's fine. Thank you. 
 agent: Thank you to connecting with us, have a nice day.
agent: Please wait for a moment, while I check.