Hi. I am Donald Walker.
user
Hello. How can I aid you?
assistant
I would like to change my existing reservation, can you please help me?
user
Sure, I can help you.
assistant
Thank you.
user
Please give me a moment.
assistant
Sure.
user
We didn't found any reservation by this name.
assistant
Ok, not an issue. Thank you.
user
Thank you for reaching us.
assistant