Hello.
user
Hello, how can I help 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
Sure, please provide me with your name please.
assistant
Myself Brian Clark.
user
Give me a moment.
assistant
Sure, take your time.
user
 Brian Clark, I regret to inform that there is no reservation by your name.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant