You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Linda Campbell here.

ASSISTANT: How may I assist you at this moment?

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 am glad to help you with that.

USER: Thanks for that.

ASSISTANT: Please wait a moment to check.

USER: Ok, I will wait.

ASSISTANT: We regret to inform you that there is no reservation found on your name in our records.

USER: Anyway, thanks for the information.

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