Hi, Donald Parker is here.
user
Hello, By what way, can I help you out?
assistant
 Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Would you help me in this?
user
Sure, we are here to help you to change it. Please wait for a while.
assistant
Ok.
user
Thanks for waiting, there was no reservation found on your specified name.
assistant
No problem. Thank you for your helping hand.
user
Thank you for approaching us.
assistant