You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Williams.

ASSISTANT: How can I assist you at this moment?

USER: Can you help me in cancelling my reservation?

ASSISTANT: Sure Jonathan Williams, I will help you with that.

USER: Ok.

ASSISTANT: Pleas wait a moment and I will check your reservation status.

USER: That's ok , thank you. Sure, I will stand by.

ASSISTANT: Sorry Jonathan Williams, no reservation has found under your name to cancel.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us, have a great day.