customer: Hello, Jerry Young here. 
 agent: Hello, how can I serve you? 
 customer: I want to alter my reservation, due to postponement of concert to be held at the place where I wanted to visit, can you please take your some time for helping me? 
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 customer: Ok. 
 agent: Sorry, there is no reservation under your name. 
 customer: Ok, thank you for the information. 
 agent: Thank you for reaching us.
agent: Sure. Please wait a while.