customer: Hello, Carol Brown here. 
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 customer: Owing to an emergency I had to request for this change reservation. 
 agent: Sure, please wait for a while, let me check and get back to you. 
 customer: Sure. 
 agent: Thanks for being patient, sorry, unfortunately no reservation has found with the provided name. 
 customer: OK, Thank you. 
 agent: You are welcome, thanks for contacting us.
agent: Hello, we are glad to have you as a customer, how can I assist you?