customer: Hello. 
 agent: Hello, how can I be your helping hand today? 
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 agent: Sure, we are here to aid you. 
 customer: Thank you for accepting my request. 
 agent: To proceed further, please mention your name. 
 customer: Sure, I am Mark Jones. 
 agent: Ok, please wait for a while, I will check the reservation on your name and revert to you. 
 customer: Sure. 
 agent: Thank you for waiting, we did not find any reservation on your name. 
 customer: Not a problem, thank you. 
 agent: Thank you for availing us.
customer: Usually I prefer a connecting flight, but unfortunately my friend has already reserved my ticket with a direct flight. So, I want to change it.