You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to cancel my previous reservation, can you help me with that?

ASSISTANT: Sure, I am happy to help you with cancelling your reservation.

USER: Thank you.

ASSISTANT: Can I have your name please for checking your reservation status?

USER: Sure, my name is Brenda Thompson.

ASSISTANT: Ok, please be hold on for a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Brenda Thompson, no reservation has found under your name to cancel.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us, have a good day.