Hi.
user
Hello. How can I help you?
assistant
I am Dorothy Wilson. I want to change an existing reservation due to sudden change in my trip. Can you help me?
user
Sure, let me check your reservation details in our database.
assistant
Thank you.
user
Sorry, I did not find any reservation by your name in our database.
assistant
No issue. Thank you.
user
Thank you for reaching us.
assistant