Hello.
user
Hello. How may I help you?
assistant
Due to sudden change in my trip to another location, I would like to do some changes in existing my reservation. Can you please help me out?
user
Yes, can you tell me your name?
assistant
Donna Davis here.
user
Sorry to inform you that there is no reservation found on your name.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant