You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you are expecting from my side?

USER: Richard Rodriguez 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, I am gleeful to help you in that flight ticket cancellation.

USER: Thanks.

ASSISTANT: Wait for a while.

USER: Ok, I will wait.

ASSISTANT: There is no reservation found for the user name in our back end to help you in ticket cancellation.

USER: Anyway, thanks for the information.

ASSISTANT: It's my pleasure and thank you for consulting our agency.