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 programme got cancelled so please help me with cancelling my reservation.

ASSISTANT: Sure, provide your name so that I can help you easily.

USER: Sure, myself Kevin Williams.

ASSISTANT: Thanks for giving your name, there is no reservation with your name.

USER: Oh! May be booking is not done properly. Anyway, thank you for your time.

ASSISTANT: Ok, thanks for contacting us.