You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: David Hernandez here.

ASSISTANT: Yes David.

USER: I want to cancel my reservation which I have done with wrong destination point.

ASSISTANT: Sure, I will help you with that, please hold on for a moment to check your reservation status.

USER: Ok, sure.

ASSISTANT: David, there is no any active reservation with your name in my database.

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

ASSISTANT: It's my pleasure, have a nice day.