Hello.
user
Hello, how can I help you today?
assistant
I am Larry Taylor. I need to change my reservation due to my planned event got postponed. So please help me with that.
user
Sure, please wait for a moment.
assistant
Thank you. I will wait for your response.
user
Sorry to say that, no reservation was found with your good name.
assistant
Oh! It may  not be booked properly due to server issues while booking. Anyway, thank you for your time.
user
Thank you for reaching us.
assistant