You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Donna Phillips here. 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, please allow me a moment to check for the previous reservation.

USER: Ok, I will wait.

ASSISTANT: Donna, there is no reservation found under your name.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.