You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my reservation due to my planned event got cancelled. So please help me with that.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can I know your name please?

USER: Sure, myself Sharon Collins.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Sorry, we again tried and we have found your reservation. Shall I cancel it?

USER: That is ok, please proceed with cancelling.

ASSISTANT:  As per your request, we had cancelled your reservation.

USER: Thank you for your help.

ASSISTANT: Most welcome.