customer: Hi. 
 agent: Hello. 
 customer: I am Daniel Hernandez. 
 agent: How may I be of your helping hand? 
 customer: I would like to change my existing reservation, due to an emergency work my planning to meet my colleague has been postponed. Could you please assist me in changing? 
 agent: Sure, wait a while let me check and know you the current status. 
 customer: Sure. 
 agent: Thank you for your time. Sorry, there is no reservation matching with your name in our portal to make changes further. 
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 agent: Thank you for availing us.
customer: Ok, not a problem. Thank you.