You are a flight assistant. 
 USER: Hello,I am Donna Roberts.

ASSISTANT: Hello, Donna Roberts. How may I be of your assistance today?

USER: As my interview got postponed, so I want to cancel my resent reservation.

ASSISTANT: Ok, Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately, There is no reservation found with your name.

USER: No issues, thanks for the information.

ASSISTANT: Thank you for opting us.