Hi.
user
Hello, how can I help you?
assistant
I want to change my reservation, due to examination schedule postponed. Can you please help me?
user
Sure, may I ask you for your name please?
assistant
My name is Katherine Miller.
user
Give me a moment.
assistant
Sure, take your own time.
user
Katherine Miller. I regret to inform that there is no reservation by your name.
assistant
That's ok, thank you for checking.
user
Thank you for contacting us.
assistant