You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Can I have your name to check your reservation status?

USER: Sure, myself William Davis.

ASSISTANT: Ok, please be on hold while I am checking.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, there is no previous reservation found on your name to cancel.

USER: It's ok fine, no problem. Anyway, thank you for your time.

ASSISTANT: Thank you for connecting with us. Have a nice day.