You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kimberly Martin here.

ASSISTANT: How can 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 Martin, I will help you with that.

USER: Thanks.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Ok, I will wait.

ASSISTANT: Sorry Kimberly Martin, no reservation has found under your name to cancel.

USER: Anyway, thanks for the information.

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