Hi.
user
Hello. How may I assist you?
assistant
I want to change an existing reservation due to sudden change in my trip. Can you help me?
user
Sure, I am here to help you out.
assistant
Thank you.
user
May I know your name please?
assistant
 Myself Amy Moore.
user
Amy Moore, we haven't found any reservation under your name in our database.
assistant
No issue, Thank you for the information.
user
Thank you for reaching us.
assistant