customer: Hello. 
 agent: Hello. How may I help you today? 
 customer: Can you please change my existing reservation? 
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 customer: Sure, I am Sharon Wright. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Thank you for waiting. Sorry, there are no active reservations on your name to change. 
 customer: Thank you for your information. 
 agent: Thank you for reaching our service.
agent: Sure, may I know your name for change in the reservation?