You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Myself David King. I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Ok, take your time.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for consulting us.