customer: Hello. 
 agent: Hello. 
 customer: Brenda Thomas here. 
 agent: How may I help you? 
 customer: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates. 
 agent: Sure, I am here to help you with that. Sorry to say that, there is no reservation found on your name in our database. 
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 agent: Thank you for reaching us.
customer: Oh! That's ok, thank you for giving the information.