You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Collins.

ASSISTANT: How may I help you out?

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

ASSISTANT: Sure, I will help you in cancelling the reservation.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found in our database.

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

ASSISTANT: Thank you for choosing us.

USER: Most welcome.