Hello, I am Michael Harris.
user
Hello. How can I assist you?
assistant
As my manager  did not approve my leave, I would like to change my recent reservation. Can you aid me with this?
user
Yes, I can help you.
assistant
Thank you.
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