Hi.
user
Hello.
assistant
I am David Nelson.
user
How may I support you today?
assistant
I would like you change my recent reservation, as my exam is postponed. Can you help me?
user
Please wait for a while.
assistant
Sure.
user
We are sorry to inform you that there is no reservation found with your given name in our data.
assistant
That's ok, thank you.
user
Thank you for reaching us.
assistant