Hello.
user
Hello.
assistant
I am Dorothy Miller.
user
How may I aid you at this moment?
assistant
I need to change my reservation due to my planned event got postponed. So please help me with changing my reservation.
user
Sure, I am happy to help you to change the ticket details.
assistant
Thank you.
user
Can you please wait a minute?
assistant
Sure.
user
I regret to inform you that, there  is no active reservation found with your name in our portal to change the details.
assistant
Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.
user
You are welcome. Thank you for choosing our agency.
assistant
Most welcome.
user