customer: Hi. 
 agent: Hello. How may I assist you today/. 
 customer: I need to change my existing reservation as my exams got postponed, Can you please help me with that? 
 agent: I will help you. Please help me with your name. 
 customer: Sharon Phillips here. 
 agent: Thank you. Please allow me a minute. 
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 agent: Sharon Phillips, I regret to inform you that there is no booking done on your name. 
 customer: Ok, no problem. Thanks for your information. 
 agent: Thank you for reaching us. Have a great time.
customer: Sure.