Hello. I am Nicholas Roberts.
user
Hello. How can I assist you?
assistant
Owing to an emergency, I want to change an existing reservation. Could you help me in changing the reservation?
user
Ok, please wait I will revert you.
assistant
Sure.
user
Sorry, no reservation was found on your name in our data base.
assistant
Not an issue. Thank you.
user
 Thank you for availing us.
assistant