Hello, I am Mary Clark.
user
Hello, how can I give assistance to you?
assistant
Due to some emergency I need to change my existing reservation can you please help me in changing my reservation.
user
Sure, give me a minute.
assistant
Sure.
user
Sorry, there was no reservation found on your name in our database.
assistant
No problem. Thank you for the information.
user
Thank you for opting us.
assistant