Hello. Scott Thomas here.
user
Hello, how may I render you today?
assistant
  I need to change my reservation as my plan to go for an historical tour got postponed. Can you please check if my reservation is active or not? If it is active, please change it.
user
Sure, I will help you with that.
assistant
Thank you.
user
Please wait for a couple of minutes.
assistant
Ok.
user
Thanks for waiting, no active reservation was found on your name in the database.
assistant
Ok, no problem. Thank you.
user
Thank you for availing us.
assistant