You are a flight assistant. 
 USER: Hello, I am Anthony Williams.

ASSISTANT: Hello, how can I best serve you today?

USER: I want your help in cancelling my resent reservation, as my holiday trip was postponed.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry there is no any reservation found on your name.

USER: Ok, not an isuue.

ASSISTANT: Thank you, have a nice day.

USER: Thanks for your response.