Hi. I am Scott Lee.
user
Hello, how may I aid you?
assistant
I want to change an existing reservation due to sudden change in my trip. Can you help me?
user
Sure, let me check the current status and revert to you.
assistant
Ok.
user
Thanks for waiting, there is no reservation found in our data base by the name you mentioned above.
assistant
No issue. I will choose an other alternative.
user
Thank you for approaching us.
assistant
Thank  you for your help.
user