You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: David Carter here, as my college Fest has been cancelled, due to a fire accident in my college. so I want to cancel my recent reservation. Could you please help me in cancelling?

ASSISTANT: Sure,  we are here to help you. Please wait a moment, I will check the reservation list and revert to you.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, I have checked all the reservation list but I could not find your name in the list.

USER: Ok, not an issue. Thanks for your quick response.

ASSISTANT: Thank you for choosing us.