You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Robert Harris here.

ASSISTANT: How may I help you at this moment?

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

ASSISTANT: Sure, I am happy to help you to cancel the ticket.

USER: Thanks for that.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure, take your own time.

ASSISTANT: I regret to inform you that, I have not found any active reservation with your name in our database to cancel.

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

ASSISTANT: You are welcome. Thank you for approaching us.