customer: Hi. 
 agent: Hello. 
 customer: I am Charles Miller. 
 agent: How may I help you out? 
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 agent: Sure, I will help you in cancelling the reservation. 
 customer: Sure. 
 agent: Sorry, there are no reservations found in our database. 
 customer: That's ok, thank you for your help. 
 agent: Thank you for choosing us.
customer: I want to cancel my reservation, can you help in that?