You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you now?

USER: I am Sarah Taylor. As my show performance at Boston has been postponed, help me in cancelling my reservation.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. Unfortunately, there is no reservation found on your name.

USER: Its ok, thank you for your response.

ASSISTANT: Thanks for choosing us, have a great day.