customer: Hi. 
 agent: Hello. How can I provide assistance to you? 
 customer: I would like to change my reservation as I cannot go on that trip due to personal reasons, can you please help me with that? 
 agent: Can I know your name? 
 customer: Mary Thompson here. 
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 customer: Sure, take your time. 
 agent: Sorry, we couldn't find a reservation on your name to change. 
 customer: That's ok, thank you for checking. 
 agent: Thank you for choosing us.
agent: Give me a minute.