Hi, I am Mary Turner.
user
Hello, how can I help you?
assistant
I would like to change my existing reservation due to my interview got post pone in last minute. Can you help me in changing an existing reservation?
user
Ok, I can help you with that. Please wait, I will check your reservation.
assistant
Ok.
user
Sorry, no reservation has been found with your name. Thanks for reaching us, have a good day.
assistant
Ok, no worries.
user