customer: Hi. 
 agent: Hello, How can I best serve you today? 
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 agent: Sure, I am here to help you with that, can I know your good name to proceed further? 
 customer: I am Shirley Clark. 
 agent: I am very sorry to inform you that there is no reservation found under your name in our database. 
 customer: No problem, thanks for the information. 
 agent: Thank you for choosing us.
customer: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?