customer: Hello, my name is David Thompson. 
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 customer: Due to sudden change in weather where I wanted to visit, I need to cancel the ticket. 
 agent: Ok sure, please wait a moment. Thank you for waiting. Sorry David, no reservation is found under your name. Thank you for choosing us. 
 customer: Ok that's fine, thank you for giving a instantaneous response. 
 agent: You are welcome, have a good day.
agent: Hello David,. How can I help you now?