You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Margaret king here.

ASSISTANT: How can I assist you at this moment?

USER: Can you please help me out in cancelling my recnt reservation?

ASSISTANT: Sure, I will help you with that. Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Margaret King, no reservation has found under your name to cancel.

USER: That's ok, thank you.

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