You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: This is Gary Walker. I made a reservation earlier this week to attend sports event, unfortunately event got cancelled. Can you cancel my recent reservation?

ASSISTANT: Sure, I will be back with your details.

USER: OK.

ASSISTANT: Gary, no reservation found with your name.

USER: Thank you for the information.

ASSISTANT: Thank you, have a nice day.