You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Debra Robinson. due to some client meeting, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, I will help you with the cancellation of flight ticket reservation.

USER: Sure, I will wait for your response.

ASSISTANT: Wait for a moment please.

USER: Ok.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Not a big problem, anyway thank you very much for your service.

ASSISTANT: Thank you.