Hello, I am Rebecca Miller.
user
Hello. How can I aid you?
assistant
Owing to an emergency, I want to change an existing reservation, can you help me in changing the reservation?
user
Ok, please wait I will revert you in a moment.
assistant
Sure.
user
 Sorry to notify you that no reservation was found on your name.
assistant
Not an issue. Thank you.
user
 Thank you for reaching us.
assistant