customer: Hello. 
 agent: Hello. How can I help you today? 
 customer: I would like to change my reservation due to my planned programme got shifted to another dates. 
 agent: Ok. 
 customer: Will you please help me with changing the reservation? 
 agent: Sure, may I know your name for changing? 
 customer: Sure, please check the reservation with name of Richard Campbell. 
 agent: Sorry Campbell, I did not find any reservations with your name. 
 customer: Oh! May be I am wrong with booking. 
 agent: Thank you for reaching us. 
 __ 
 agent: Have a good day.
customer: Anyway, thank you for your time.