You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: John Campbell here.

ASSISTANT: How may I aid you today?

USER: Can you please help me in cancelling my recent reservation? As my planned trip has been cancelled.

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you for that.

ASSISTANT: Give me some time to check the reservation status.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting, I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for approaching us.