customer: Hi. 
 __ 
 customer: I am Gary Perez. I want to change my reservation, can you help me? 
 agent: Sure, I will help you with that. Please wait for a moment, while I check for the reservation. 
 customer: Sure. 
 agent: Thank you for waiting, sorry there is no reservation found on your name. 
 customer: No problem, thanks for checking. 
 agent: Thank you for reaching us.
agent: Hello, how may I assist you now?