You are a flight assistant. 
 USER: Hello, I am Sandra Parker.

ASSISTANT: Hello, how may I assist you?

USER: As my schedule of attending an food festival got cancelled. Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, please wait a moment I'll check the details of your reservation.

USER: Ok.

ASSISTANT: Sorry to say, no details found in my database regarding your reservation.

USER: Ok, thank you for your information.

ASSISTANT: Thanks for availing us, have a nice day.