You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: My name is Brenda Williams. My plan to visit a function is postponed as of now, so I want to cancel my recent reservation.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for reaching us.