Hello.
Hello. How may I help you today?
I have to change  my reservation due to my planned event got postponed. So please  help me with that.
Sure, I am here to help you with that. May I know your good name?
Thank you. Please check the reservation with my name John Hall.
Ok, please wait for a minute.
Sure, take your time.
Sorry to say that, there is no reservation found on your name in our database.
Oh! It may not be booked properly. Anyway, thank you for your time.
Thank you for reaching us.