You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I want to cancel my reservation due to some emergency work at Office, so please help me.

ASSISTANT: Sure, we are here to help you with cancellation.

USER: Thank you for accepting my request.

ASSISTANT: In whose name, your reservation has been done earlier?

USER: Sure, please check the reservation in the name of Joshua Collins.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Ok, I will wait.

ASSISTANT: Sorry to tell you that, there was no reservation found on your name to cancel it.

USER: No worries, thank you for informing me.

ASSISTANT: Thank you for approaching us.