customer: Hello. I am Donna Baker. 
 agent: Hello, How can I serve you? 
 customer: I need to change my existing reservation due to some emergency work. Can you please help me with that? 
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 customer: Thank you. 
 agent: Please wait a minute. 
 customer: Sure. 
 agent: Thanks for waiting, there is no active reservation on your name. 
 customer: Ok, no problem. Thank you for your response. 
 agent: Thank you.
agent: Sure, I am here to help you.