customer: Hello. 
 agent: Hello, how may I assist you? 
 customer: My name is Linda Wilson. 
 agent: Yes, Linda. 
 customer: I want to change my existing reservation because my exam has been postponed. Can you help me out? 
 agent: Sure, I will help you in modifying the reservation. 
 customer: Thank you. 
 agent: Please wait a moment, let me check the previous reservation details on your name. 
 __ 
 agent: Sure. In my search to your request, no reservation found on your name. 
 customer: Ok, may be my father has cancelled my reservation. 
 agent: Ok, please check your email again to verify your reservation details. 
 customer: Ok. Thank you for checking. 
 agent: My pleasure, thank you for reaching us. 
 customer: Welcome.
customer: That's ok, no problem.