Hi.
user
Hello, how may I assist you?
assistant
I would like to change existing reservation as my sister marriage got postponed.
user
Sure, may I know your name?
assistant
I am William Carter.
user
Ok, give me a moment.
assistant
Ok.
user
Thanks for waiting, there is no reservation found with your name.
assistant
Thank you for your response.
user
Thanks for reaching us.
assistant