You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Myself Donna Collins. Due to some urgent work, I am going to cancel my reservation. Can you please help me in cancelling the reservation?

ASSISTANT: Sure, I am here to help you. Please wait, I will check your reservation status and let you know.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Collins, I did not find any reservation under your name in our database.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: You are welcome and thank you for choosing us.