Hello.
user
Hello.
assistant
Sarah Lewis here.
user
Sarah Lewis, how can I guide you for the day?
assistant
Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.
user
 Sure, I will help you with that changing. Please hold for a moment, let me check  your previous reservation status.
assistant
Sure, take your own time.
user
Sorry to tell you that, there is no reservation found on your name in our database to change it.
assistant
That's ok, thank you for giving the information.
user
Sarah Lewis, thank you for choosing our agency. Have a great day.
assistant