customer: Hello. 
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 customer: I want to change my destination airport code in my existing reservation, can you please help me out? 
 agent: Sure, may I know your name to check for the previous reservation? 
 customer: Sure, my name is Robert Davis. 
 agent: Please allow me a moment to check for the previous reservation. 
 customer: Ok, take your time. 
 agent: Robert, there is no reservation found under your name. 
 customer: It's ok, thank you for the information. 
 agent: You are welcome. Thank you for contacting us, have a great day.
agent: Hello. How can I assist you today?