You are a flight assistant. 
 USER: Hi. Debra Johnson here.

ASSISTANT: Hello, how may I help you today?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Debra Johnson, please wait for a moment till I check with your booking.

USER: Sure.

ASSISTANT: I am so sorry to inform you, there is no active reservation found by your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for consulting with our services, have a nice day.