customer: Hello. 
 agent: Hello, how can I aid you? 
 customer: Can you help me in changing my recent reservation? 
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 customer: I am Karen Smith. 
 agent: Thank you for sharing your name. Please allow me 2-3 minutes while I check for the status in our database. 
 customer: Sure. 
 agent: Thank you for waiting, Karen Smith. Sorry, there is no active reservation found under your name to change. 
 customer: Its ok, thank you. 
 agent: Thank you for reaching us. Have a great day!.
agent: I am here to help you with your concern. Sure, can you please let me know your name to check with the reservation status?