You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Ronald Johnson 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 glad to help you in flight ticket cancellation. Please wait for a moment to check it.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting, I have your name in our booking portal but I did not find any ticket reserved on the name that you have mentioned.

USER: Anyway, thanks for the information.

ASSISTANT: You are most welcome and thank you for reaching us.