Hi. I am Dennis Lee.
user
Hello. How may I assist you?
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. Can you help me with it please?
user
Sure, I will help you.
assistant
   Thank you.
user
Please wait a moment.
assistant
Ok.
user
There is no reservation on your name.
assistant
That's ok.
user
Thank you so much.
assistant
Thank you for the response.
user