You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Deborah Moore here.

ASSISTANT: How may I help you out?

USER:  I have to cancel my reservation which I have done earlier to participate in dance programme but unfortunately I have stay back here to take care of my grandmother. Can you please help me out with cancelling of my reservation?

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

USER: Thanks for that.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

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

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.