You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your good name please?

USER: Sure, please check the reservation with my name Brian Clark.

ASSISTANT: I have found the reservation and cancelled it successfully.

USER: Thank you for your help.

ASSISTANT: You are most welcome.