You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, please  check the reservation with my name Kenneth Lee.

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

USER: Oh! It may not be booked properly. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.